I think all the treats by Merrick are USA made (Texas-I think). That is all I bought so far, Canadea has a good treat out, that is USA Made and I only paid 3.99 for a pretty good size bag, Paul Newman's Own also makes a decent treat and I think it also is USA made--but not sure of this one.....
I usualy just buy some chicken breast, stew meat and cut it up and put it in the oven, for about 8 hrs. on 250 and it makes a great treat and G&P love it. I don't use seasoning on my stuff that I make for them. I have a dehydrater also, but this is just easier, putting it on a baking sheet--sometimes i put a little olive oil and fresh rosemary on the stuff. Its easy and its good-anyone can do this.
3 Dog Bakery stuff is good, you can also get it in a lot of grocery stores. Walmart also sells some Natural Dog Treats in a bag that are USA made and they sound good--ours is setting up a area for healthier treats now.