First, Manafort the Mole and then Cohen turns "nation's evidence" on a Russia deal where Trump CLEARLY lied.
On Manafort, great analysis here bu former US atty:
The prosecution is clearly and unequivocally claiming that Manafort lied to them. The corresponding denial by Manafort’s defense team, however, also provides some insight: “Manafort has provided information to the government in an effort to live up to his cooperation obligation. He [Manafort] believes he has provided truthful information and does not agree with the government’s characterization or that he has breached the agreement” (emphasis mine). Having seen hundreds of such court filings as a prosecutor, this language suggests that even Manafort’s attorneys recognize their client had been lying to Mueller’s team.
And Cohen, on Trump's ties to Russia and a BIG campaign lie:
https://www.cnn.com/2018/11/30/politics/donald-trump-michael-cohen-robert-mueller/index.html
Cohen's admission that he had lied to Congress about a Trump effort to seal a deal to build a Trump Tower in Moscow, deep into the presidential campaign in 2016, raised a flurry of troubling questions that Mueller is yet to answer.
In effect, it told a story of a presidential candidate who was enmeshed in a commercial relationship with a nation that Mueller accused in previous indictments of waging "information warfare" against the United States to disrupt the election and help put Trump into the White House.
