The national press corps didn’t bother to tell you why Tom Daschle, the Democrats’ Senate leader, decided at the 11th hour not to run for president: In the end, he calculated that he couldn’t survive scrutiny of his persistent service to the clients of his wife. Linda Daschle has been one of the airline industry’s top lobbyists for two decades — when she wasn’t busy running the Federal Aviation Administration (FAA), which explains why, just 11 days after the 9/11 attacks, her husband rushed through the Democratic Senate, which he controlled, the $15 billion bailout for the airline industry, a...