I'd also consider that the FMVSS guidelines are just that - guidelines - D.O.T. does NOT test products coming in from anywhere to be sure they are meeting the guidelines. Unfortunately it's an honor system and if you think the chinese are honorable...just look back in the news about how willing they are to cut corners without any worry about who gets hurt. I'd try to go with a trusted brand no matter what. If I had a chinese tire that said it was a load range E and a U.S. tire that was load range D, I'd trust the U.S. tire first. Hell I'd trust it even if it was a Japanese tire.
I've worked for people that put cheap-ass chinese tires on wreckers I had to drive and it was some of the worst junk I'd ever rolled on. One set of tires you could watch the tread wiggle from side to side as it went down the road; didn't know it until I was following another driver in my personal truck while he drove the wrecker. Explained why it was so squirrelly on the road though, that's for damn sure!