Louisiana Senator David Vitter may be called to testify in the upcoming trial of a woman accused of running an upscale Washington prostitution service, attorneys said at the opening of trial.
The Republican senator is on the list of potential witnesses identified Monday in the racketeering and money laundering case against Deborah Palfrey.
Vitter acknowledged being involved with Palfrey's escort service. He made brief statements apologizing for what he called "a very serious sin," then ducked follow-up questions.
Vitter was elected in 2004 after representing Louisiana's first Congressional District in the House from 1999 to 2004. He and his wife Wendy have four children.
Prosecutors said they planned to call about a dozen former escorts and several clients.
The witness box "maybe the hottest seat in D.C. this year," said prosecutor Catherine K. Connelly.
Attorneys for both sides told jurors they would see former clients discussing embarrassing and sometimes graphic details about their personal lives.
Randall Tobias, a former senior State Department official, is also on Palfrey's witness list.
Palfrey's attorney, Preston Burton, told jurors that Palfrey ran a high-class fantasy business. Clients called in looking for a date, and Palfrey got paid according to whether they played cards, saw a movie or chose to had sex with women.
The escorts signed a contract promising not to break the law, he said.