Mark Souder On His Affair: "I Have Sinned"

Representative Mark Souder is resigning from Congress after admitting to having an affair with a female staffer:

"I sinned against God, my wife and my family by having a mutual relationship with a part-time member of my staff," Souder said in a statement Tuesday. "I am so shamed to have hurt those I love."

Souder said his resignation – which will take effect Friday — is "the best decision for my family, the people of northeast Indiana and our country."