Like other Minnesota pols, Norm Coleman likes to invoke the memory of the late Hubert H. Humphrey, whose Senate seat the Republican held until last month (and which he is now trying to regain in court). The latest example came in a newspaper column opposing the Senate stimulus bill in which Coleman claimed to quote Humphrey, deftly identifying himself with the legendary leader of Minnesota’s DFL Party. But signs are scant that Humphrey spoke those words — unless Coleman meant the other Hubert Humphrey?