U.S. Sen. Debbie Stabenow, D-Michigan, says she supports an impeachment investigation into President Donald Trump.

“The Mueller report describes extremely serious instances of the President of the United States trying to obstruct justice," Stabenow said in a statement obtained by MLive. "I support the ongoing investigations in the House of Representatives and would stand with my colleagues in the House if they decide to launch a formal impeachment inquiry. No one is above the law.”

Stabenow, the No. 4 Democrat in the Senate, released the statement after Robert Mueller testified before Congress last week and after U.S. Sen. Patty Murray of Washington, the No. 3 Senate Democrat, threw her weight behind an impeachment inquiry.

Stabenow and Murray are now the two highest-ranking senators to call for impeachment hearings.

Stabenow, who has served in the Senate since 2001, was re-elected to a fourth term last November.

Gary Peters, Michigan’s other senator, has not publicly endorsed impeachment proceedings. Peters, a Democrat, is up for re-election in 2020.

Including Murray and Stabenow, 12 of the 47 Senate Democratic Caucus members and nearly half the 235 House Democrats have endorsed impeachment inquiry, according to Politico. Six of those senators are running for president.