Marcus: The U.S. government. Having built a small business into a big one, I can tell you that today the impediments that the government imposes are impossible to deal with. Home Depot would never have succeeded if we'd tried to start it today. Every day you see rules and regulations from a group of Washington bureaucrats who know nothing about running a business. And I mean every day. It's become stifling.

If you're a small businessman, the only way to deal with it is to work harder, put in more hours, and let people go. When you consider that something like 70% of the American people work for small businesses, you are talking about a big economic impact.