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.