WASHINGTON -- Internal investigations into the conduct of several House members have been exposed in an extraordinary, Internet-era breach of security involving the secretive process by which Congress polices lawmaker ethics. Revelations of the mostly preliminary inquiries by the House Committee on Standards of Official Conduct -- also known as the Ethics committee -- shook the chamber as lawmakers were immersed in a series of scheduled votes Thursday. The panel announced that it was probing two California Democrats -- Reps. Maxine Waters and Laura Richardson -- even as its embarrassed leaders took pains to explain that several other lawmakers also...