You can now offiically call him Senator Al FrankenAl FrankenJustice requires higher standard than Sessions Overnight Energy: Perry makes his case to lead Energy Dept. | Dems alarmed by spending cut plans Dems blast Trump plans for deep spending cuts MORE.

The Minnesotan was sworn in about an hour ago by Vice President Joe BidenJoe BidenBiden boards train home to Delaware after Trump's inauguration Overnight Tech: Meet the key players for Trump on tech | Patent chief staying on | Kerry aide goes to Snapchat | Uber's M settlement Biden's farewell message: Serving as VP has been my 'greatest honor' MORE, giving Democrats a 60 seat supermajority in the Senate.

Former Vice President Walter Mondale, a fellow Minnesota Democrat, accompanied Franken to the Senate floor. Franken said earlier today that he hopes to be the "people's proxy" in the Senate.