Frank Bisignano wants to run the Internal Revenue Service like an efficient private company – and this week he hired Jamie Dimon’s private banker to help him do just that, On The Money has learned. Vince La Padula has spent the past 23 years at JPMorgan running something called the “workplace solutions” business in the big bank’s wealth management arm. Now, he’s joining Uncle Sam’s tax collection agency as Bisignano’s No. 2. La Padula’s resume includes stints in New York City government under Rudy Giuliani and Mike Bloomberg. At JPM, he was also the bank’s point man on Ukraine and...