Can coffee or chocolate plants be grown in the US?

Located in the US, but if you have a greenhouse, is it possible to replicate the growing conditions and grow either of these plants?
Update: Uh, Syd, you do realize what a greenhouse is, RIGHT?? DUH indeed.
Update 2: And I'm pretty sure, but I could be wrong, that CHOCOLATE beans are different than COCAINE plants! Surely the two products don't come from the same plant.
Update 3: A big THANK YOU to the person who gave me such a great, detailed answer with the links, I appreciate the information.

I'm with you, it's amazing how dumb some of the answers are on this site...LOL Thanks again~
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