Sen. Al FrankenAlan (Al) Stuart FrankenFranken targets senators from both parties in new comedy tour Al Franken on another Senate run: 'I'm keeping my options open' Andrew Cuomo and the death of shame MORE said there is "a very decent chance" that President Trump will still be in office when the Minnesota Democrat's book comes out on May 30.
"The book is coming out May 30, so I still think there's a very decent chance he'll still be president," Franken told USA Today in an interview last week, alluding to the ongoing probes consuming the White House over Russian election interference and ties between the Trump campaign and Moscow.
But the former "Saturday Night Live" comedian said he doesn't know if Trump will make it to the end of his four-year term.
"That was kind of a joke, but it's kidding on the square," Franken continued, explaining that it's the kind of joke "that you also mean."
"There's a lot here that we need to get to the bottom of, and part of it is his campaign. Did his campaign cooperate with the Russians who are undermining our democracy?" Franken said to USA Today's Susan Page.
Franken's comments come amid reports that President Trump asked then-FBI Director James Comey in February to let "go" of his investigation into former national security adviser Michael Flynn.
His decision earlier this month to fire Comey amid the ongoing investigations being conducted by his agency has led to questions about timing and motive.
Last week, the Department of Justice appointed former FBI Director Robert Mueller as special counsel, who will conduct his own Russia investigation.
Franken's new memoir is titled "Al Franken: Giant of the Senate, by Al Franken."
The Democratic senator has been a vocal critic of Trump, reportedly writing in his book that Americans realized Trump is "unbalanced" after Inauguration Day.
He previously stated that his Republican colleagues also questioned the president's mental health.