U.S. Labor Unions

What do you gentlemen think of labor unions in the U.S.?
What, in your eyes, are the costs and/or benefits of having them?

>>45
Necessary and Proper clause General Welfare clause, Commerce clause, etc. I don't like how the Federal Reserve runs things either, but I'm not for abolishing the nation's central bank simply because it has been misused as an instrument. It needs massive reform, for sure.