WASHINGTON (AP) — One year after the Jan. 6, 2021, U.S. Capitol attack, Attorney General Merrick Garland said the Justice Department was committed to holding accountable all perpetrators “at any level” for “the assault on our democracy.” That bold declaration won’t apply to at least one person: Donald Trump.

Special counsel Jack Smith’s move on Monday to abandon the federal election interference case against Trump means jurors will likely never decide whether the president-elect is criminally responsible for his attempts to cling to power after losing the 2020 campaign. The decision to walk away from the election charges and the separate classified documents case against Trump marks an abrupt end of the Justice Department’s unprecedented legal effort that once threatened his liberty but appears only to have galvanized his supporters.

The abandonment of the cases accusing Trump of endangering American democracy and national security does away with the most serious legal threats he was facing as he returns to the White House. It was the culmination of a monthslong defense effort to delay the proceedings at every step and use the criminal allegations to Trump’s political advantage, putting the final word in the hands of voters instead of jurors.

“We always knew that the rich and powerful had an advantage, but I don’t think we would have ever believed that somebody could walk away from everything,” said Stephen Saltzburg, a George Washington University law professor and former Justice Department official. “If there ever was a Teflon defendant, that’s Donald Trump.”

While prosecutors left the door open to the possibility that federal charges could be re-filed against Trump after he leaves office, that seems unlikely. Meanwhile, Trump’s presidential victory has thrown into question the future of the two state criminal cases against him in New York and Georgia. Trump was supposed to be sentenced on Tuesday after his conviction on 34 felony counts in his New York hush money case, but it’s possible the sentencing could be delayed until after Trump leaves office, and the defense is pushing to dismiss the case altogether.

Smith’s team stressed that their decision to abandon the federal cases was not a reflection of the merit of the charges, but an acknowledgement that they could not move forward under longstanding Justice Department policy that says sitting presidents cannot face criminal prosecution.

Trump’s presidential victory set “at odds two fundamental and compelling national interests: On the one hand, the Constitution’s requirement that the President must not be unduly encumbered in fulfilling his weighty responsibilities . . . and on the other hand, the Nation’s commitment to the rule of law,” prosecutors wrote in court papers.

The move just weeks after Trump’s victory over Vice President Kamala Harris underscores the immense personal stake Trump had in the campaign in which he turned his legal woes into a political rallying cry. Trump accused prosecutors of bringing the charges in a bid to keep him out of the White House, and he promised revenge on his perceived enemies if he won a second term.

“If Donald J. Trump had lost an election, he may very well have spent the rest of his life in prison,” Vice President-elect JD Vance, wrote in a social media post on Monday. “These prosecutions were always political. Now it’s time to ensure what happened to President Trump never happens in this country again.”

After the Jan. 6 attack by Trump supporters that left more than 100 police officers injured, Republican leader Mitch McConnell and several other Republicans who voted to acquit Trump during his Senate impeachment trial said it was up to the justice system to hold Trump accountable.

The Jan. 6 case brought last year in Washington alleged an increasingly desperate criminal conspiracy to subvert the will of voters after Trump’s 2020 loss, accusing Trump of using the angry mob of supporters that attacked the Capitol as “a tool” in his campaign to pressure then-Vice President Mike Pence and obstruct the certification of Democrat Joe Biden’s victory.

Hundreds of Jan. 6 rioters — many of whom have said they felt called to Washington by Trump — have pleaded guilty or been convicted by juries of federal charges at the same courthouse where Trump was supposed to stand trial last year. As the trial date neared, officials at the courthouse that sits within view of the Capitol were busy making plans for the crush of reporters expected to cover the historic case.

But Trump’s argument that he enjoyed absolute immunity from prosecution quickly tied up the case in appeals all the way up to the Supreme Court. The high court ruled in July that former presidents have broad immunity from prosecution, and sent the case back to the trial court to decide which allegations could move forward. But the case was dismissed before the trial court could get a chance to do so.

The other indictment brought in Florida accused Trump of improperly storing at his Mar-a-Lago estate sensitive documents on nuclear capabilities, enlisting aides and lawyers to help him hide records demanded by investigators and cavalierly showing off a Pentagon “plan of attack” and classified map.

But U.S. District Judge Aileen Cannon dismissed the case in July on grounds that Smith was illegally appointed. Smith appealed to the Atlanta-based 11th U.S. Circuit Court of Appeals, but abandoned that appeal on Monday. Smith’s team said it would continue its fight in the appeals court to revive charges against Trump’s two co-defendants because “no principle of temporary immunity applies to them.”

In New York, jurors spent weeks last spring hearing evidence in a state case alleging a Trump scheme to illegally influence the 2016 election through a hush money payment to a porn actor who said the two had sex. New York prosecutors recently expressed openness to delaying sentencing until after Trump’s second term, while Trump’s lawyers are fighting to have the conviction dismissed altogether.

In Georgia, a trial while Trump is in office seems unlikely in a state case charging him and more than a dozen others with conspiring to overturn his 2020 election loss in the state. The case has been on hold since an appeals court agreed to review whether to remove Fulton County District Attorney Fani Willis over her romantic relationship with the special prosecutor she had hired to lead the case.

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Associated Press reporter Lisa Mascaro in Washington contributed.