One of President Donald Trump's staunchest MAGA allies lashed out after being cornered on his election lies in a NewsNation interview, insisting that there is "tons of evidence" of election fraud despite the mountain of evidence to the contrary.Trump has been rehashing his debunked claims about widespread election fraud this week, spurred on by conservative gloom over GOP candidate and ex-reality TV star Spencer Pratt losing out on a spot in the Los Angeles mayoral race's general election. Trump has also claimed that his controversial acting DNI nominee, Bill Pulte, will be doing his bidding and seeking arrests linked to his false claims about the 2020 election.One of Trump's most outspoken allies over the years has been Wisconsin Sen. Ron Johnson, who has proven himself to be an avowed promoter of conspiracy theories. He has also been closely involved with Trump's efforts to undermine the 2020 election results, with aides from his office allegedly being involved in a scheme to provide fake Wisconsin electors to Vice President Mike Pence as part of a plot to keep Trump in power.On Monday, he appeared for an interview with NewsNation host Connell McShane and was pressed about the continual lack of evidence for Trump's claims of widespread voter fraud that was sufficient to tilt national election results. Johnson lashed out at the line of questioning, saying he was "getting very tired" of the argument," and insisting that there was abundant evidence."There's tons of evidence. There's tons of irregularities," Johnson said. "We need to take them seriously because what is absolutely true as Americans on both sides do not have confidence in our elections. That's unsustainable."Johnson continued in a rambling fashion, claiming that allegations that the Trump campaign colluded with Russia in 2016 were "ginned up" by Hillary Clinton, calling her "the first election denier."When McShane pressed the senator about why Trump and his allies have not presented concrete evidence of fraud during the many court hearings that have resulted from his claims, Johnson insisted that they have, but that they are ignored and not investigated further once elections are certified.Trump himself also recently had a blow-up on national television when confronted about his election fraud claims, storming out of an interview with NBC News' Kristin Welker when she pressed him about the lack of evidence. Trump said that she was either "crooked" or "stupid" for asking him about it, and insisted that U.S. elections are still rigged.