Prior to the confirmation vote, a number of senators came to the floor to praise Mueller for his service.

Sen. Chuck GrassleyCharles (Chuck) Ernest GrassleyPavlich: The claim Trump let the mentally ill get guns is a lie Congress fails miserably: For Asian-Americans, immigration proposals are personal attacks Grassley, Dems step up battle over judicial nominees MORE (R-Iowa) said that even though the FBI has not operated perfectly since Mueller took over, the director has worked hard to improve the agency and deal honestly with congressional oversight. 

I appreciate his candor and I believe the FBI is in good hands with his leadership, Grassley said.

Sen. Jeff SessionsJefferson (Jeff) Beauregard SessionsUnder pressure, Trump shifts blame for Russia intrusion Overnight Tech: Judge blocks AT&T request for DOJ communications | Facebook VP apologizes for tweets about Mueller probe | Tech wants Treasury to fight EU tax proposal Overnight Regulation: Trump to take steps to ban bump stocks | Trump eases rules on insurance sold outside of ObamaCare | FCC to officially rescind net neutrality Thursday | Obama EPA chief: Reg rollback won't stand MORE (R-Ala.) also praised Mueller.

I truly believe he represents the highest and the best ideals of American patriotism, Sessions said.

Muellers current term expires Aug. 2.