US President Donald Trump will sign into law a bill imposing new sanctions on Russia, the White House says.
Both houses of Congress backed the bill, which also includes measures against Iran and North Korea, but it was thought Mr Trump might veto it.
Russia has already retaliated by ordering cuts to US diplomatic staff and barring the use of some properties.
The sanctions are over Russia's 2014 annexation of Crimea and alleged interference in the US election.
Iran and North Korea are being penalised over their ballistic missile tests.
White House spokeswoman Sarah Huckabee Sanders said Mr Trump would sign the bill, but only after having negotiated "critical elements" of it. She did not specify what those elements were.
"He has now reviewed the final version and, based on its responsiveness to his negotiations, approves the bill and intends to sign it," she said.