Doesn’t the latest Hillary Clinton scandal make you want to throw up your hands and say: Do we really have to do this again? Do we have to go back there? People assume she is our next president. We are defining political deviancy down.

The scandal this week is that we have belatedly found out, more than two years after she left the office of secretary of state, that throughout Mrs. Clinton’s four-year tenure she did not conduct official business through the State Department email system. She had her own private email addresses...