It’s a curious illness, even if its source is clear: success. Mr. Romney is a multimillionaire, and through his own hard work. It’s a great American story, yet the Republican is paralyzed at the thought of what his opponents might do with it in a 9% unemployment economy. Democrats have already pounced on his time at Bain Capital, accusing Mr. Romney of “stripping down” companies and “laying off” employees for profit. The press has run exposés on his privileged upbringing, his “oceanfront” vacation home, his use of private jets.