Among other last-ditch tactics: personally calling local election officials who are trying to rescind their certification votes in Michigan, suggesting in a legal challenge that Pennsylvania set aside the popular vote there and pressuring county officials in Arizona to delay certifying vote tallies.
Election law experts see it as the last, dying gasps of the Trump campaign and say Biden is certain to walk into the Oval Office come January. But there is great concern that Trump's effort is doing real damage to public faith in the integrity of U.S. elections.
"It's very concerning that some Republicans apparently can't fathom the possibility that they legitimately lost this election," said Joshua Douglas, a law professor at the University of Kentucky who researches and teaches election law.
"We depend on democratic norms, including that the losers graciously accept defeat," he said. "That seems to be breaking down."
Trump's own election security agency has declared the 2020 presidential election to have been the most secure in history. Days after that statement was issued, Trump fired the agency's leader.
The increasingly desperate and erratic moves have no reasonable chance of changing the outcome of the 2020 election, where Biden has now received more votes than any other presidential candidate in history and has clinched the 270 Electoral College votes needed to win.