I was gonna spout off with "Emotiva," but as correctly pointed out already, the XMC's a pre-pro.
While it's a bit depressing, I can also understand the logic from a retailer's perspective. Most consumers who want an all-in-one receiver are going for value, in which case the manufacturers decide to assemble them overseas to keep them competitively priced, whether that be China, Malaysia or otherwise. When a customer is willing to spend more on a setup like a pre-pro, the manufacturers can justify the expense of making them here as they are also priced accordingly, like Macintosh. There is some AWESOME American-made gear, and it's not even too expensive either (again, see Emotiva or Outlaw),BUT it's also not going to be a $150 all-in-one unit either.
Funny thing is how many customers came to me who after putting up with their ultra-low end budget AVR for not even a year would come to our store complaining about said crappy unit, and stepping it up to at least a mid-grade receiver, but then balking at the still very affordable price. Consumers forget how darn cheap we have it these days compared to the 70s/80s when taking inflation into account. $500 these days gets you a helluva lotta bang for the buck. $1000 even more so. Even with a full blown pre-pro plus multi-channnel amp, it's still on par (or less) than what much of Joe Public spent on hi-fi setups back in the day.