This story was originally published by ProPublica. Republished under a CC BY-NC-ND 3.0 license.
To the narcotics agents investigating drug smuggling in Puerto Rico prisons, it seemed at first like a typical scheme: associates of an inmate gang sneaking drugs into the prison, gang members distributing them inside and bank records showing the money flowing.
Then the agents discovered something unusual.
Leaders of the prison gang known as Los Tiburones, or the Sharks, were selling drugs to inmates not only for money, but for their votes. Specifically, votes for now-Gov. Jenniffer González-Colón, a longtime Republican and supporter of President Donald Trump, investigators found.
To make sure the inmates — many of whom were addicted — complied, the gang’s leaders threatened violence and to withhold drugs, the investigators learned. Corrections employees in on the plan looked the other way as the gang, formally known as Group 31, ran the enterprise.
What at first seemed like a routine drug case had turned into something bigger. Puerto Rico, along with just a couple of U.S. states, allows inmates to vote. Puerto Ricans living in the territory can vote in all contests except federal general elections. It is a felony to willfully offer money or gifts in exchange for support at the polls. A conviction carries fines of as much as $250,000 and imprisonment of up to two years.
Investigators had gathered solid evidence of election fraud implicating both inmates and staff, and they were working toward determining whether González-Colón or her campaign was involved, four people with knowledge of the case told ProPublica. They requested anonymity because they are not authorized to speak publicly about the case.
But as federal prosecutors prepared an indictment against the inmates and staff in November 2024 — just days after Trump won the election and González-Colón clinched the governorship — they received a surprising directive. Their bosses in the U.S. Attorney’s Office for the District of Puerto Rico instructed them to exclude the voting-related counts against the inmates and all charges against the prison staff, an investigation by ProPublica found.
In December, they filed an indictment charging 34 inmates and associates with crimes including drug distribution resulting in at least four overdose deaths, money laundering and possessing a firearm. And while prosecutors described the drugs-for-votes scheme in the court filing, they did not include a single charge related to it.
Soon after Trump took office, the lead prosecutor, Jorge Matos, was told by a supervisor to take the investigation no further, according to four people familiar with the case.
“Before the election, it was definitely full steam ahead,” said one person familiar with the case. “After the election, that all changed.”
Matos, who left the Justice Department in June 2025, did not respond to phone calls or texts from ProPublica or attempts to reach him on social media.
For those working on the case, the decision to scrap the investigation was especially puzzling given the new president’s agenda; Trump issued executive orders in early 2025 aimed at eradicating drug traffickers and declaring election integrity “fundamental” to maintaining American democracy.
“We invested so much effort to make a difference,” said another person. “We’re frustrated, but there’s nothing we can do.”
People close to the case wondered if politics had played a bigger role than law and order. Trump congratulated González-Colón in a letter shared at her January 2025 inauguration saying, “I am so proud of your resounding victory.” That same month, she pushed to erect a statue of him at the Capitol building in San Juan alongside other presidents who’ve visited the island. “He deserves that,” she said, according to an official post from the Federal Affairs Administration of Puerto Rico on X.
W. Stephen Muldrow, the U.S. attorney for the District of Puerto Rico, was appointed by Trump in 2019 and has served continuously since then. His name appears on the indictment along with those of three assistant U.S. attorneys. Muldrow told ProPublica his office does not comment on open investigations other than in press releases or press conferences. While a couple of the inmates have accepted plea deals, most of the drug and money-laundering cases against the inmates and associates are still making their way through the court system.
In a follow-up email, a spokesperson for the office noted the indictment was filed during the Biden administration and under the previous governor of Puerto Rico.
Charging corrupt public officials “has always been and remains a top priority” of the office, wrote spokesperson Lymarie Llovet-Ayala.
“When sufficient admissible evidence exists to charge persons involved in public corruption, as required by the Justice Manual, the Puerto Rico U.S. Attorney’s Office will aggressively pursue such charges,” she wrote.
In court documents tied to a different case, in October 2025, a magistrate judge mentioned “an unrelated white-collar investigation involving the Governor of Puerto Rico.” Muldrow’s office responded in a filing, stating, “There is no white-collar investigation (or any other investigation) of Puerto Rico Governor Jenniffer González-Colón.”
González-Colón has not been charged with a crime. The governor declined ProPublica’s repeated requests for an interview and did not respond to written questions sent to her communications team.
Muldrow had a friendly working relationship with former Attorney General Pam Bondi when she was the state attorney general in Florida and he was an assistant U.S. attorney in the middle district of that state, according to people who know him.
A Department of Justice spokesperson said in an email, “Neither Attorney General Bondi nor Acting Attorney General Blanche was involved in any charging or investigative decision in this Biden administration prosecution.”
The attorney general’s office noted in a statement that the indictment mentioned allegations of voting coercion, and said: “This office did not limit the underlying investigation in any way.”
In May 2025, in a move that federal prosecutors and political observers alike said was highly unusual, the Office of the Director of National Intelligence seized the voting machines from Puerto Rico over concerns about “vulnerabilities,” according to testimony in March by Director Tulsi Gabbard to Congress.
A spokesperson from the office told ProPublica the seizure was at the request of the U.S. attorney’s office in Puerto Rico and was “not about any election in particular.” The goal was to “assess risk to this critical infrastructure, given similar infrastructure is used throughout the United States,” the spokesperson said in an email.
Muldrow didn’t answer questions from ProPublica about the matter.
Lydia Lizarribar, an attorney for Juan Carlos Ortiz-Vazquez, a Group 31 member who prosecutors named as one of the leaders of the drug operation, declined to comment on the case.
A Party “Stronghold”
The Puerto Rican prison system has a long and well-documented history of overcrowding, inadequate medical care and other human rights violations so egregious that in the late 1970s they prompted federal oversight that continued for decades.
The grim conditions spurred inmates to form advocacy groups like Group 31, which was officially created as a nonprofit to lobby corrections officials and lawmakers to improve inmates’ quality of life. Over time, federal prosecutors say, several of these groups operating in the prisons evolved into violent criminal organizations such as Los Tiburones and Ñetas, with memberships in the thousands.
The poor conditions were also the backdrop for a push in 1980 by the New Progressive Party governor at the time, Carlos Romero Barceló, to codify voting rights for prisoners.
Inmates have been aligned with the party ever since, political analysts said. Political parties in Puerto Rico differ dramatically from those on the mainland. They don’t adhere to a straight divide among Democrats and Republicans. Instead, the two main parties center much of their focus on whether Puerto Rico should become a state and so have Republicans and Democrats within each.
It’s not unheard of for politicians of all parties to court the inmate vote, but the New Progressive Party has made it a “stronghold,” said Fernando Tormos-Aponte, a political scientist with expertise on Puerto Rico and an assistant professor of sociology at the University of Pittsburgh.
“It’s been a huge advantage for them particularly as elections in Puerto Rico have been decided by small margins,” Tormos-Aponte said of the New Progressive Party. In the 2024 general election for governor, the party won 83% of the inmate vote, according to a ProPublica tally of voter returns on the State Elections Commission’s website.
Inmate votes were especially key in the 2024 gubernatorial primary as González-Colón, a longtime New Progressive Party member, was challenging the incumbent governor of the same party.
She won the primary by fewer than 30,000 votes, according to the State Elections Commission. Local news reports said that an estimated 5,000 prisoners voted territorywide.
In her first months in office, González-Colón signed a law allowing people with criminal records to obtain professional licenses in Puerto Rico.
In July, she signed off on a law expanding inmates’ ability to hold jobs in the private sector, calling it “part of a vision of social justice,” adding “we believe in the second chance, in the value of work and in the capacity for transformation of the human being.”
In March, González-Colón signed a law requiring the parole review board increase the pace at which parole denials are reconsidered. She said in a press release the law is aimed at a “fairer, more transparent system focused on rehabilitation.”
Political analysts said rumors have swirled over the decades about coercive tactics being used to mobilize the prison vote, raising significant questions about the extent to which that support comes in exchange for favors from the ruling party.
This time was different, sources said. They had evidence. Prosecutors had “locked up” the voting-for-drugs scheme among the gang, inmates and staff, and were deep into investigating a potential political connection when Muldrow’s office pulled the plug.
“These are the type of questions you would think an administration that has publicly declared this war on drug trafficking would investigate further,” Tormos-Aponte said of the Trump administration. “You would think it would be a priority.”
For the people familiar with the prison election fraud investigation, it was clear politics were at play in the decision to abandon charges prosecutors were confident they could win. What wasn’t clear, they said, was who was pulling the strings and how. It was “like you’re watching a puppet show but you can’t see the strings,” one person said.
“You know what you’re seeing isn’t telling the whole story,” the person said. “There was some kind of invisible hand.”
Drugs for Votes
Although they excluded drugs-for-votes charges, prosecutors didn’t scrub the Dec. 12, 2024, indictment of how they believed the operation worked.
Outside associates of Los Tiburones, the indictment alleged, primarily used drones to drop drugs on prison grounds. Then staff participating in the scheme helped in the “introduction and distribution” of the drugs inside the prison or acted as lookouts. The employees also allowed the gang members to enforce their own discipline system against those who didn’t do as they asked, including when voting. Punishments included withholding food from inmates or forcing them to sit with their arms folded while they were beaten and kicked. In four cases, the drugs led to overdose deaths, the indictment says.
The indictment also alleged that Los Tiburones made connections with government officials “for the purpose of reducing prison sentences,” and the gang mandated both the prisoners’ political affiliations and “who to vote for in primary and general elections.”
A relative of one of the prisoners told ProPublica that inmates had to show their ballots to gang leaders when they voted to avoid punishment.
Puerto Rico’s Civil Rights Commission, which for decades has sent observers to polls across the territory, reported “serious difficulties” in gaining access to several prisons during the 2024 general election. After being denied entry at multiple locations, the commission successfully sought a court order, but much of the day had already passed by the time the observers were allowed in.
“We strongly condemn the lack of diligence and indifference shown by the Department of Corrections and Rehabilitation in hindering the functions of this Commission on the day of early voting in correctional institutions,” the agency later wrote in a special report on the 2024 elections.
The report said observers witnessed prisoners voting in cramped quarters that didn’t allow for privacy and having to hand their ballots to others to put in the box.
Ever Padilla-Ruiz, the commission’s executive director, told ProPublica that inmates sent written complaints to the office detailing their experiences of being pressured to vote in the primary — some for González-Colón and others for her opponent, Pedro Pierluisi. They did not mention any gangs by name, Padilla-Ruiz said.
He said inmates reported that inmate group leaders were “always sending messages” up until election day, adding that they were too afraid to say much more.
Several people familiar with the case said investigators had evidence that González-Colón had spoken to a Group 31 member, but they had not determined whether she was involved in vote buying.
One of the imprisoned gang leaders had bragged on Facebook about his connection to González-Colón, posting a picture of him talking with her on WhatsApp while the primary campaign for governor was underway, two sources said.
She clearly benefited from the scheme, they said. “There was no doubt about that,” one said, noting that thousands of votes were likely at stake.
The indictment notes that gang members were provided preferential treatment such as relaxed visitation policies and the use of Sony PlayStations, big screen TVs and cellphones, but investigators had not connected the privileges to González-Colón or her campaign.
“Latinos Are Winning”
González-Colón has been a longtime advocate for Puerto Rico statehood and has been engaged in Republican politics for more than 20 years. She was elected chair of the Republican Party of Puerto Rico in 2015 and two years later became resident commissioner, a role similar to a U.S. representative but with limited voting power in Congress.
She’s been an active participant in Latinos for Trump, praising the president over the years as “wise” and in 2019 saying on social media, “Latinos are winning under his leadership.”
As she continues to lobby for Puerto Rico to become the 51st state, González-Colón has also leaned in to her relationships with other members of Trump’s Cabinet, posting well wishes on social media to Susie Wiles, Trump’s chief of staff, and congratulating Markwayne Mullin, the Homeland Security director Trump picked to replace Kristi Noem, calling him “my good friend.”
“I know he will provide strong leadership as he works with President Donald J. Trump to strengthen our nation’s security,” she wrote in a March Facebook post.
Experts on Puerto Rican finance and politics say the relationship between González-Colón and the Trump administration is symbiotic though lopsided.
“I see it more as a situation of unrequited love,” said Alvin Velazquez, an associate law professor at Indiana University’s Maurer School of Law and an expert on Puerto Rico’s bankruptcy in 2017.
The territorial island, whose residents were granted U.S. citizenship in 1917, receives less federal funding than most states. Political leaders in Puerto Rico, González-Colón included, have perpetually lobbied for more support.
Republicans in turn have capitalized on González-Colón’s rise as she helped bolster GOP support among the Puerto Rican diaspora and other Latino voters on the mainland. Now-Secretary of State Marco Rubio endorsed González-Colón in her 2024 gubernatorial election.
Polls specifically isolating Puerto Rican voters show that Trump saw at least a 4 percentage point uptick in votes from Puerto Ricans living in states compared to the 2020 election, garnering 45% of the group’s vote in the 2024 election, according to the nonprofit research center Instituto Cervantes at Harvard University.
And perhaps most importantly, experts say, Trump has counted on González-Colón to support his strategic geopolitical initiatives in the region, including the controversial reopening of long-abandoned naval bases in Puerto Rico. González-Colón welcomed Defense Secretary Pete Hegseth to the island in September and thanked Trump on X for “recognizing the strategic value Puerto Rico has to the national security of the United States and the fight against drug cartels in our hemisphere.”
That’s despite the sentiment among many Puerto Ricans who were angered by Trump’s response to Hurricane Maria in 2017 and a comedian at one of Trump’s 2024 campaign rallies who called Puerto Rico a “floating island of garbage.” And while Trump has said that González-Colón was “wonderful to deal with and a great representative of the people,” he later called Puerto Rico “one of the most corrupt places on earth.”
In June 2024, Cengage Learning, Macmillan Learning, Elsevier, and McGraw Hill 
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