Senate Foreign Relations Chairman Bob Corker renewed calls Tuesday to rein in President Donald Trump’s authority to impose tariffs in what he called the “perfect first step” for Congress to push back after Trump’s praise of Russian President Vladimir Putin.

“He’s taxing Americans, he’s pushing our allies away,” Corker said of Trump’s tariffs. “When he does that he’s strengthening Putin. So to me the very first step that benefits Americans would be for us to go ahead and strongly pass this tariff legislation that we have and take back those authorities.”

Trump is facing broad, bipartisan criticism following his summit and news conference with Putin Monday in Helsinki, where the president sided with Putin against the U.S. intelligence community’s consensus that Russia interfered in the 2016 election. An initial question is whether the reaction will spur action on legislation in Congress to curb some of the president’s actions on trade and foreign policy, rather than lawmakers simply issuing statements of disapproval.

Corker thus far has been unable to get a vote on his bill, which would require Trump to get congressional approval for tariffs based on a need to protect national security. The president has announced wide-ranging tariffs on steel and aluminum imports on national security grounds, and is threatening to use that rationale to impose as much as a 25 percent tariff on auto imports.

Senators Marco Rubio, a Republican, and Democrat Chris Van Hollen, backed by GOP Judiciary Chairman Chuck Grassley, have separately proposed legislation imposing stiff sanctions on Russia’s energy and banking sectors if Director of National Intelligence Dan Coats certifies Russia interferes in a future election.

Corker said that’s an “interesting” idea but said he wants time to read and consider it before signing on.

Corker said he plans to have Secretary of State Michael Pompeo testify before his committee next Thursday on Russia. He said the White House must be thinking about what to do next to try to control the damage from Monday.

“They’ve got to be reeling,” the senator said.