Many Chinese 文物 in American, but lot of them are legal - American people bought them in China legally and transported them to American legally since No any laws to prohibit this at that time (Now some laws about this 文物 export/buying, etc.). We can not say all Chinese 文物 in American should return to China, just like American can not say China should give back American cars, etc. in China. So many people don't know basic knowledge about the laws involved 文物.
