A Chinese-American US lawmaker announced Tuesday he plans to resign from Congress following allegations of an unwanted sexual encounter with a young woman, a spokesman said.
Representative David Wu, a Democrat from the northwest state of Oregon, faces an ethics investigation and said he would resign to fight the "serious allegations" against him.
The Oregonian newspaper reported last week that the teenage daughter of a colleague had called Wu's office to accuse him of an "unwanted sexual encounter" over Thanksgiving.
The lawmaker had initially said he would not seek re-election next year, but now says he will resign once the current crisis over America's debt ceiling is resolved.
"He has announced his intention to resign pending the resolution of the ongoing debt ceiling crisis," a spokesman for the lawmaker told AFP.
Wu, who was first elected in 1998, has insisted he did nothing illegal, but House Minority Leader Nancy Pelosi requested an ethics probe against his conduct on Monday.