Senator Elizabeth Warren was silenced by Senate Republicans after reading a letter criticising Jeff Sessions.
The president says he hasn't discussed Russia with the new man in charge of the probe into alleged collusion.
Jeff Sessions was one of Donald Trump's earliest supporters, but their relationship soured long before he was asked to resign.
Fired US Attorney General Jeff Sessions exits the Justice Department.
The US Senate Democratic leader reacts as he's handed a note about the firing of the US Attorney General.