Spemack, I see this question got pushed aside in the ensuing conversation:
"How did President H.W. Bush get buy with enacting the import ban?"
I may be wrong about this, but it seems that Bush exploited something of a loop hole, or gap, in the law and Constitution when he issued an executive order directed at firearms imported from foreign nations.
Clinton, in 1994, issued a similar executive order that banned most firearms and ammunition imports from China.
Neither of those orders, on their face, addressed interstate commerce in any meaningful way, and that's why I think they weren't really pursued to any meaningful degree through the courts.
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza
Baby Jesus cries when the fat redneck doesn't have military-grade firepower.