Well I have some Rugers, and some AR's, and a couple of Kel Tecs and an NAA and an S&W BG .380 that are American made. But I also have Brownings (Belgian), Beretta's, Bersa, HK's, Bernadelli, Benelli in the gun safes. It's nice to live in America where you have choices.
But back to the original post. American manufacturers seem to be doing ok, Ruger had to stop taking new orders because they are fully booked for most of the year, and S&W stock is way up this year. Rebuilding manufacturing in America is a much bigger problem than can be addressed on these forums though.
Simplistic answers like only buy American mean you simply won't own most things. For example you probably wouldn't be reading this forum because somewhere around 99% of all computer motherboards are sourced from outside the US. Not a single television set was manufactured in the US last year (none since 1996 as far as I can tell). American manufacturing for many years concentrated on trying to build down to a price, so design and quality suffered and yet they still couldn't compete on price with the cheap imports. And because the design and quality had been reduced they also could not compete with the top end brands. And whether you like their products or not the Germans and Swiss in particular have maintained a high quality of manufacturing. Who knows if they are really worth the extra money, but enough people think they are to keep them doing quite well.
When you do the math it just doesn't look good. Personally I think an assembly line worker in the US needs to make at least $15-20 an hour ($30-40k per year) to have a decent lifestyle. But when you add a reasonable benefits package it looks more like $20-26 per hour to a company. And that is very expensive when compared to a Croatian working for $5-7 / hr., or a Chinese/Vietnamese/Indian worker making $1-3 / hour. Then you have the problem of US consumers wanting everything cheap, just read these forums. Every day there are multiple posts asking about the cheapest ammo, the cheapest price for a new gun, etc, almost no one asks about the "best" because they only want good enough.
Now I have to run, have to pack up my Croatian made pistol so my gunsmith can install some American made Tritium sights on it tomorrow.