WASHINGTON (AP) — The top federal prosecutor in Miami who had been tasked with overseeing an investigation into foes of President Donald Trump has resigned, joining other high-profile Justice Department officials departing in the wake of the midterm elections, officials said Friday.
Jason Reding Quiñones' resignation follows frustrations among Washington officials with his management of the office assigned to lead the so-called “grand conspiracy” investigation,
according to people familiar with the matter who spoke on the condition of anonymity to discuss personnel issues.
The Justice Department’s top national security official, John Eisenberg, also resigned on Friday, Attorney General Todd Blanche said. On Thursday, Assistant Attorney General Harmeet Dhillon, who led a radical overhaul of the department's Civil Rights Division, also announced her departure.
Quiñones was confirmed by the Senate last year as U.S. attorney for the Southern District of Florida, where the Justice Department had centered its meandering probe into whether former law enforcement and intelligence officials conspired against the Republican president.
His departure comes as the investigation has shown signs of faltering amid a spate of staff turnovers and delays. Investigators in recent weeks have put off scheduled grand jury testimony of several witnesses, according to multiple people familiar with the matter who spoke on condition of anonymity to discuss an ongoing investigation.
Blanche said in a social media post that the department is grateful for Quiñones' "leadership in combating violent crime, drug trafficking, sex trafficking, and transnational crime, including the indictment of Raúl Castro."
Castro, the former Cuban president, was indicted by Quiñones' office in May on charges related to the 1996 downing of civilian planes flown by Miami-based exiles.
Quiñones said Friday that he is leaving with “immense pride in what we accomplished together and profound gratitude for the opportunity to serve our great Nation.”
“I am grateful to President Trump for his trust and to the extraordinary men and women of the great Southern District of Florida for their dedication, friendship, and unwavering commitment to justice and the rule of law,” Quiñones wrote in a social media post.
The “grand conspiracy" investigation has proceeded in fits and starts for over a year with repeated setbacks and departures. Last April, a lead national security prosecutor in the investigation of former CIA Director John Brennan was replaced on the team after raising questions about the strength of the case.
Shortly afterward, Joseph diGenova, a former U.S. attorney for the District of Columbia, took over the probe. DiGenova resigned from the Justice Department in September without bringing any criminal charges.
Eisenberg was sworn in as assistant attorney general in charge of the department’s National Security Division in June 2025 and oversaw cases involving espionage, terrorism, export control violations, cyber crimes and other matters.
Among the division’s most high-profile cases under his watch was the prosecution of former national security adviser John Bolton, who pleaded guilty this year to allegations of mishandling classified information and is awaiting sentencing.
“He has served with distinction, strengthening our nation’s ability to address threats, both foreign and domestic,” Blanche said in a statement.
