Will Obamacare succeed where term limits failed?

[HoreTore]

If a plumber is self-employed and runs his own plumbing business is he still working class or is he a member of the bourgeoisie?

Then he's moved up to middle class, the petty bourgeoisie. He owns his own means of production, but he is still forced to sell his labour on the market. If he opens a factory producing plumbing equipment, he's a capitalist.