US President Joe Biden described the failure to condemn former President Donald Trump in the Senate as "a sad chapter in state history that reminds that democracy is fragile, and that it must always be defended."
Biden added in a written statement that "violence and extremism have no place in the United States."
The US president said that the substance of the accusation against the former president is not in dispute, as even those who opposed the conviction - such as the Republican minority leader in the Senate, Mitch McConnell - believe that Trump is guilty of disgracefully failing to fulfill his duty, and is practically and morally responsible for provoking the violence that broke out in The Capitol, according to the text of the statement.
Biden said that all Americans - especially the leaders - must defend the truth and defeat the lies, for that is the way to end what he described as "the brutal war and the healing of the American nation."
The proposal to convict Trump did not gain enough votes to be approved in the Senate on Saturday evening, as he voted 57 to 43, which is less than the two-thirds majority needed to convict him of incitement to revolt.
Trump's trial in the Senate lasted for 5 days, in the same building that his supporters stormed on January 6, shortly after they attended a rally in which Trump delivered a speech that his opponents considered inciting.
Democrats had hoped for indictment to hold Trump responsible for a siege that killed 5 people, including a policeman, and to set the stage for a vote that would prevent him from holding public office again.
They said allowing Trump to assume public office again would make him not hesitate to once again encourage political violence.
"persecution"
In his first comment on the ruling, Trump said in a statement that the trial "represents another phase of persecution and prosecution."
Trump welcomed his acquittal, saying that his political movement "has just begun," and said in a statement that "our historical, national and beautiful movement to restore the greatness of the United States has just begun."
"In the coming months I have a lot to share with you, and I look forward to continuing our wonderful journey together to achieve American greatness for our people as a whole," he added.
Trump, 74, is still tightening his grip on the Republican Party, relying on support for his right-wing populist approach and the "America First" principle, and is considering running for the next presidential election in 2024.
For his part, the leader of the Democratic majority in the Senate, Chuck Schumer, said that the day of the storming of Congress is the terrible legacy of former President Trump, describing it as "a stain in American history that will not be erased."
Republicans had previously saved Trump from impeachment on February 5 last year during his previous trial when he voted to convict and remove him from office, one Republican senator, Mitt Romney.
Trump became the third US president ever to be held accountable in the House of Representatives, a procedure similar to a criminal accusation, and he is also the first president to face impeachment twice, and the first president to stand trial in the Senate after leaving office.