Moral Relativists
When David Vitter admitted to using a prostitute service, no Republicans asked him to resign.
When it became clear that Pete Domenici had asked Bush and Gonzales to fire David Iglesias because the US Attorney didn’t trump up charges against Democrats, no Republicans asked him to resign.
When it became clear that Bob Ney and Ted Stevens and John Doolittle and Don Young had received some mighty curious gifts, no Republicans asked them to resign.
When Tom DeLay was indicted for money laundering, no Republicans asked him to resign.
But because Larry Craig wiggled his foot under a men’s bathroom stall, Pete Hoekstra and Norm Coleman and John McCain have asked him to resign.
Update: Language on Ney, Stevens, Doolittle, and Young changed to protect the principle of innocent until proven guilty, per Steve’s comment.