President Trump signed legislation imposing new sanctions against Russia into law on Wednesday.
The bill restricts Trump's own ability to ease sanctions currently in place against Russia, giving Congress veto power to block him from removing them.
The sanctions package caused trouble across the waters before it was even enacted. Getting wind of legislation, Russia retaliated last week, ordering the U.S. to cut staff at its diplomatic mission by 755. It served as Moscow's most aggressive and decisive move against the U.S. since the final years of the Cold War.
Congress imposed the sanctions as a response to alleged Russian meddling in the 2016 U.S. election, Russian aggression in Syria and its annexation of Crimea. The comprehensive package also includes economic penalties against Iran and North Korea.
The legislation had bipartisan support, with both parties expressing interest in holding the administration accountable in its implementation of sanctions.
If President Trump were to veto the bill, it would have likely caused outcry from both sides of the aisle, particularly since the oversight provision was included because Republicans and Democrats expressed wariness of Trump's affinity for Putin.
The Associated Press contributed to this report.