The Senate has unanimously approved legislation to renew a decades-old law allowing the U.S. to impose sanctions on companies for doing business with Iran.
Senators have voted 99-0 to extend the Iran Sanctions Act for 10 more years. The House already has passed the legislation.
The bill now goes to President Barack Obama. He's expected to sign it.
Lawmakers say the law allows the U.S. to punish Iran should Iran fail to live up to the terms of the landmark nuclear deal.
The White House is still reviewing the bill, but officials say they've determined the measure doesn't breach the nuclear agreement. That satisfies a key condition Obama had established for his approval.
The officials weren't authorized to comment publicly and spoke on condition of anonymity.