Congressman David Wu quits amid 'unwanted sex' scandal
A US Democratic congressman has resigned amid allegations he had an unwanted sexual encounter with the 18-year-old daughter of a campaign donor.
David Wu of Oregon said he would step down following the resolution of the debt limit crisis in Washington.
The Taiwanese-born congressman said he was resigning to protect his family and fight the "serious allegations".
Mr Wu, who is in the process of divorce, is the third US congressman to resign amid a sex scandal this year.
His encounter with the young woman, the daughter of a childhood friend and campaign donor, was reported on Friday by the Oregonian newspaper.
He does not face any criminal charges in the incident, in part because the alleged victim believed there was not enough evidence to press a case, the newspaper reported.
The newspaper said the encounter occurred in the autumn shortly after Mr Wu, 56, was elected to his seventh term.
Republican Representative Christopher Lee of New York stepped down in February after a shirtless photograph surfaced that he had sent to a woman he met on an online classified advert website.
In June, Democrat Anthony Weiner, also of New York, resigned after it was revealed he had sent numerous lewd photographs of himself to women he met online.