Speaking to MSNBC's Rachel Maddow Tuesday night, Michael Cohen's lawyer said his client has "knowledge on certain subjects" that should be of interest to Special Counsel Robert Mueller, and he's "more than happy" to share "all that he knows."

Cohen, President Trump's former personal lawyer, pleaded guilty Tuesday to eight charges of bank and tax fraud and campaign finance law violations, and said he made hush payments to two women who claimed they had affairs with Trump "at the direction of a candidate for federal office." His lawyer, Lanny Davis, told Maddow that Cohen now feels "liberated to tell the truth, everything about Donald Trump that he knows."

Davis said one thing Cohen is open to talking about is a 2016 meeting at Trump Tower, attended by Donald Trump Jr., Trump's son-in-law Jared Kushner, and his former campaign chairman and recently convicted felon Paul Manafort. They met with several Russians connected to the Kremlin, who promised compromising information on Hillary Clinton, and there is the "obvious possibility of a conspiracy to collude and corrupt the American democracy system," Davis said.