Senator Ensign is back in DC. Expect a rousing ovation from his GOP colleagues today.

Senator John Ensign has returned to the Capitol following his admission of an affair with a staffer. New details about that affair keep emerging. It's very shady:

Ensign aides and an attorney for the Hamptons engaged in an escalating series of accusations last week, including a claim by Ensign’s office that an attorney for the Hamptons was making “exorbitant demands for cash and other financial benefits” from the senator.

Doug Hampton wrote to Fox News on June 11, offering details to the network on his wife’s relationship with the senator and the personal fallout the couple suffered from the affair. Five days later, Ensign held a Las Vegas press conference during which he disclosed his romantic relationship with Cindy Hampton.

This one is far from over.

But, if history is any precedent, Ensign will receive a very warm welcome from his GOP colleagues today at the weekly Tuesday caucus luncheon. That's what happened to David Vitter, fresh from his prostitute scandal. According to USAToday, Vitter "received a round of applause audible outside the room." The Hill called what Vitter got "thunderous applause."

On the other hand, Larry Craig was shunned.