He made hundreds of millions of dollars running Bain Capital, but Mitt Romney won't be running the U.S. He announced this afternoon that he is ending his run for the presidency. No doubt, countless Mormons and private equity lobbyists have gone into mourning.

Technically, Romney is "suspending" his campaign. This means that he will keep the delegates he won in his primary victories in Massachusetts, Michigan and Utah. This will give him some influence in the process of selecting the eventual Republican nominee.

Although Romney was a great success in the world of private equity, it didn't seem to help him in the national campaign. Mike Huckabee's line about the essential coldness of private equity investors -- "I believe most Americans want their next president to remind them of the guy they work with, not the guy who laid them off" -- was pretty devastating. I don't know if that background was Romney's greatest weakness -- his Mormonism didn't help, nor did his salesman's tendency to say just about anything to please a given audience -- but you can bet there are some disappointed Democrats out there. I'm sure they were looking forward to exposing the layoffs that Romney initiated through his equity investments.