Slavery on the Bush agenda?

Talk of slavery is all the rage this year what with it being the bicentenary of the abolition of the practice in Britain. So one wonders why the Bush administration is weighing in against an appeal decision in the case of Hong Ying Gao who claimed asylum in the United States in 2001 after fleeing China when her mother sold her, as a wife, to a man in her village for the equivalent of 2,200 USD. Ms. Gao claims that the man, to whom she has been promised as a spouse, without her consent, will abuse her.

I have only one question. Is this not slavery? If it is why does the US government want to return her to that in the year 2007? (OK - that's two questions but what the hell!)