i meant that America has had some great Olympic lifters, Bednarski, Patera, Dube, Kono, Martinez, Cameron, Michaels, Mark Henry, surely one or most of them snatched 400 pounds. 
alright. I thought it was obvious hes in a pretty light weightclass and thats the reason..
mark henry = Senior American record holder in Snatch, Clean and jerk, and Total (1993–1997)
Senior National Championship (1993, 1994, 1996)
do you know what his max were?