George McGovern, Democratic Presidential candidate in 1972, wrote in 1992 about trying to run a business after getting out of politics

http://www.wsj.com/articles/SB100014240529702034064045780705... (google the headline for the full article)

"I also wish that during the years I was in public office I had had this firsthand experience about the difficulties business people face every day. That knowledge would have made me a better U.S. senator and a more understanding presidential contender."

and

"The problem we face as legislators is: Where do we set the bar so that it is not too high to clear? I don't have the answer. I do know that we need to start raising these questions more often."