WASHINGTON — It's the largest prosecution in Justice Department history — with reams of evidence, harrowing videos and hundreds of convictions of the rioters who stormed the U.S. Capitol on Jan. 6, 2021. Now Donald Trump's return to power has thrown into question the future of the more than 1,500 federal cases brought over the last four years.Jan. 6 trials, guilty pleas and sentencings have continued chugging along in Washington's federal court despite Trump's promise to pardon rioters, whom he has called "political prisoners" and "hostages" he contends were treated too harshly.In a statement Monday, Attorney General Merrick Garland said Justice Department prosecutors "have sought to hold accountable those criminally responsible for the January 6 attack on our democracy with unrelenting integrity.""They have conducted themselves in a manner that adheres to the rule of law and honors our obligation to protect the civil rights and civil liberties of everyone in this country," Garland said.Here's a look at where the prosecutions stand on the fourth anniversary of the Capitol riot and what could happen next:Hundreds of arrests, guilty pleas and prison sentencesMore than 1,500 people across the U.S. have been charged with federal crimes related to the deadly riot. Hundreds of people who did not engage in destruction or violence were charged only with misdemeanor offenses for entering the Capitol illegally. Others were charged with felony offenses, including assault for beating police officers. Leaders of the Oath Keepers and the Proud Boys extremist groups were convicted of seditious conspiracy for what prosecutors described as plots to use violence to stop the peaceful transfer of power from Trump, a Republican, to Joe Biden, a Democrat Related A list of every known Illinois resident charged in the U.S. Capitol breach Chicago man who stole photo from Pelosi’s office during Capitol riot gets more than 4 years in prison CPD officer used N-word, shared pictures when bragging about role in US Capitol riots: feds About 250 people have been convicted of crimes by a judge or a jury after a trial. Only two people were acquitted of all charges by judges after bench trials. No jury has fully acquitted a Capitol riot defendant. At least 1,020 others had pleaded guilty as of Jan. 1.More than 1,000 rioters have already been sentenced, with over 700 receiving at least some time behind bars. The rest were given some combination of probation, community service, home detention or fines.The longest sentence, 22 years, went to former Proud Boys national chairman Enrique Tarrio, who was convicted of seditious conspiracy along with three lieutenants. A California man with a history of political violence got 20 years in prison for repeatedly attacking police with flagpoles and other makeshift weapons during the riot. And Oath Keepers founder Stewart Rhodes is serving an 18-year prison sentence for seditious conspiracy and other offenses. The Jan. 6, 2021 attack on the U.S. Capitol.Joseph Prezioso/Getty Dozens of cases are still winding through the courtMore than 100 Jan. 6 defendants are scheduled to stand trial in 2025, while at least 168 riot defendants are set to be sentenced this year.The FBI has continued to arrest people on Capitol riot charges since Trump's electoral victory in November. The Justice Department says prosecutors are still evaluating nearly 200 riot cases investigated by the FBI, including more than 60 cases in which the suspects are accused of assaulting or interfering with police officers who were guarding the Capitol.Citing Trump's promise of pardons, several defendants have sought to have their cases delayed — with little success. Related Lake Forest man to plead guilty to charges in Jan. 6 Capitol riot: Feds Feds want a year in prison for Chicago police officer who entered the Capitol on Jan. 6 Feds arrest man who says he ‘stayed on the front lines’ during Capitol breach In denying one such request, U.S. District Judge Royce Lamberth, who was nominated to the bench by President Ronald Reagan, a Republican, wrote: "This Court recently had the occasion to discuss what effect the speculative possibility of a presidential pardon has on the timetable for a pending criminal matter. In short: little to none."One defendant who convinced a judge to postpone his trial, William Pope, told the court that the "American people gave President Trump a mandate to carry out the agenda he campaigned on, which includes ending the January 6 prosecutions and pardoning those who exercised First Amendment rights at the Capitol." Pope has now asked the judge to allow him to travel to Washington to attend Trump's inauguration on Jan. 20.Scope of Trump’s potential pardons remains unclearTrump embraced the Jan. 6 rioters on the campaign trail, downplaying the violence that was broadcast on live TV and has been documented extensively through video, testimony and other evidence in the federal cases.Trump has vowed to begin issuing pardons of Jan. 6 rioters on his first day in office. He has said he will look at individuals on a case-by-case basis, but he has not explained how he will decide who receives such relief.He has said there may be "some exceptions" — if "somebody was radical, crazy." But he has not ruled out pardons for people convicted of serious crimes, like assaulting police officers. When confronted in a recent NBC News interview about the dozens of people who have pleaded guilty to assaulting law enforcement, Trump responded: "Because they had no choice."In a letter dated Monday to Trump, a lawyer for Tarrio urged the president-elect to pardon the former Proud Boys leader, who was convicted of seditious conspiracy. Supporters of President Donald Trump climb the west wall of the the U.S. Capitol in Washington on Jan. 6, 2021, after breaking through a police perimeter.Jose Luis Magana/AP Judges decry efforts to rewrite the history of Jan. 6Many judges in Washington's federal court have condemned the depiction of the rioters as "political prisoners," and some have raised alarm about the potential pardons."No matter what ultimately becomes of the Capital Riots cases already concluded and still pending, the true story of what happened on January 6, 2021 will never change," Judge Lamberth recently said in a statement when handing down a sentence.U.S. District Judge Carl Nichols, who was nominated to the bench by Trump, has said it would be "beyond frustrating and disappointing" if Trump hands out mass pardons to rioters.In another case, U.S. District Judge Amit Mehta alluded to the prospect of a pardon for Rhodes, the Oath Keepers founder convicted of seditious conspiracy."The notion that Stewart Rhodes could be absolved of his actions is frightening and ought to be frightening to anyone who cares about democracy in this country," said Mehta, who was nominated by President Barack Obama, a Democrat.Follow Associated Press coverage of the Jan. 6 insurrection here. 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