[bhousel]

Well yeah, it would seem to violate the 13th amendment..

Edit: I believe it's a form of debt bondage (peonage) that is prohibited by international law too. See: http://en.wikipedia.org/wiki/Debt_bondage

[kenneth_reitz]

You're assuming the clone would be born in the US.

[Frazzydee]

You're assuming that the governing law is that of the place of birth of the clone.

[tomjen3]

Do you have any case law to assume otherwise?