In what’s being reported as an “unprecedented move,” Sen. Cory Booker is set to testify against fellow Senator Jeff Sessions at his confirmation hearing for Attorney General today:

Way to make history, Dems. From CNN:

This would be the first time in Senate history that a sitting senator will testify against another sitting senator for a Cabinet post during a confirmation.

So, what’s driving Sen. Booker to take this first-of-its-kind action? Sen. Booker told MSNBC’s Chris Hayes last night that these are “extraordinary times and they call for extraordinary measures”:

Or it’s a sitting senator taking advantage of the “extraordinary times” to set himself up for 2020…

Rep. John Lewis will also testify against Sessions at today’s hearings: