WASHINGTON: Donald Trump capped a historic political comeback on Monday as Congress certified his election victory, in a remarkable turn from four years ago, when a mob he had summoned to Washington ransacked the US Capitol. The president-elect spent much of his campaign facing prosecution over the 2021 insurrection, when his supporters — fueled by his false claims of voter fraud — rioted to halt the certification of his defeat to Joe Biden. But Trump, 78, was voted back into office in November and Monday's ceremony went much more smoothly, even with a major winter storm blanketing the capital and much of the country in snow. "Donald J Trump of the state of Florida, has received 312 votes. Kamala D Harris of the state of California has received 226 votes," Harris herself declared to assembled lawmakers after the counting was complete. Harris — who oversaw the certification as part of her vice-presidential duties — said the official count "shall be deemed a sufficient declaration" for Trump and Vice President-elect JD Vance to take their oaths of office on January 20. The ceremony marked the final blow to efforts to have the Republican leader face justice over the riot, the culmination of a multi-pronged alleged criminal conspiracy that prosecutors said Trump led — before they dropped all charges upon his election. Trump has vowed to pardon an unspecified number of the rioters — around 900 of whom have admitted federal charges from trespassing and vandalism to assaulting police — describing them as "hostages." In a Washington Post op-ed, Biden slammed Trump's allies for downplaying the violence of 2021 and urged Americans to be "proud that our democracy withstood this assault." "We cannot accept a repeat of what occurred four years ago," he said. "An unrelenting effort has been underway to rewrite — even erase — the history of that day." Indiana conservative Mike Pence had Harris's job — certifying his own defeat alongside Trump — in 2021 when, in a desperate bid to cling to power, the then-president demanded that he reject Biden's victory. Lawmakers in both parties have occasionally used the certification process to challenge elections, but more than half of House Republicans rejected the results in 2021. No Democratic leaders followed the Republican example this time around and there were no objections to certifying Trump's victory — a process that took barely half an hour. The former reality TV star was impeached for inciting the 2021 insurrection after delivering a raucous speech outside the White House early in the day, demanding that supporters march on the Capitol and "fight like hell." Thousands attacked the citadel of American democracy — battering police with metal bars and flag poles, smashing windows, sending lawmakers running in fear and chanting "Hang Mike Pence!" Four people died — two from heart attacks, one from a potential overdose, and a rioter fatally shot by police as she tried to force her way into the House chamber. Four police officers committed suicide subsequently. Republican Speaker Mike Johnson has vowed to investigate the House committee that probed the riot and found that Trump had instigated it after the failure of a host of other schemes to overturn an election he knew he had lost. US Attorney General Merrick Garland said in a statement the Justice Department had over the last four years charged more than 1,500 people suspected of involvement in the "unprecedented attack on a cornerstone of our system of government." The certification — which launches a two-week countdown towards Trump's January 20 inauguration — was designated for the first time as a national security special event, with 500 National Guard personnel on standby. But the federal government and Washington public schools were closed Monday with up to a foot (30 centimeters) of snow expected. "Four years ago today, our nation watched in horror as a terrorist mob stormed the Capitol grounds and desecrated our temple of Democracy in a violent attempt to subvert the peaceful transfer of power," Democrat Nancy Pelosi, who was House speaker at the time of the rebellion, said in a statement. "The January 6th insurrection shook our Republic to its core — and left behind physical scars and emotional trauma on members of our congressional community and our country that endure to this day."