Belgian beers available in the U.S.

I would like to know what Belgian dark beers are (and are not) exported to the U.S. The plan is to travel to the US, and make sure none of the precious little airline weight allowance is wasted on beer that's already shipped there.

I know Chimey Blue is available in the U.S.

Has anyone spotted Rochfort 8 or 10, or St. Bernardous in the US?