If Obama's years in the senate were spent plumbing, he still wouldn't have the experience to own his own business.
In Ohio, you need to be a plumber for 5 years before you can get your “Masters license”, which allows you to own your own plumbing business.
Obama, has been a Senator for 4 years (2 if you subtract the time he has spent campaigning). So, if Obama was a plumber, he wouldn’t even have the experience to own his own plumbing business.
But don’t worry, he’s qualified to lead the free world.