President Joe Biden has been urged to ban imports of Chinese-made electric cars to the US.
The chair of the Senate Banking Committee, Senator Sherrod Brown, said "Chinese electric vehicles are an existential threat to the American auto industry".
His comments are the strongest yet by any US lawmaker on the issue, while others have called for steep tariffs to keep Chinese electric vehicles (EV) out of the country.
In February, the White House said the US was opening an investigation into whether Chinese cars pose a national security risk.
"We cannot allow China to bring its government-backed cheating to the American auto industry", Senator Brown said in a video on the social media platform X, formerly Twitter.
Senator Brown, who is a Democrat from the car-producing state of Ohio, is seeking to win a fourth term in office in November's election.
US president Biden urged to ban Chinese made electric cars in US