Senate Judiciary Committee Democrats on Tuesday will press Attorney General nominee William Barr with questions about the need to protect special counsel Robert Mueller from being fired and the limits of President Trump’s power.

“His last confirmation hearing was 27 years ago ― we can’t pretend that these are similar times. These are very different times, and I think its very important he makes his commitment to the rule of law and, in particular, the protection of the investigation led by special counsel Robert Mueller,” said Sen. Chris Coons, D-Del., during a conference call with reporters Monday.