It depends on your outlook I suppose. If you only care about your own teams needs, then yeah, do as you please.
That being said, the us team doesn't have many supertalents. A us supertalent would get playing time from the moment they showed up on the shortlist.
I guess there's also the fact that on the us team you'd get more deep tournament xp. Playing in the world cup is 3000 exp not including the qualifying rounds. A bad team would miss out on that.
I personally only recruit us players because I want to see OUR team do well. It's a nationalist thing.
If you don't feel the same way, then theres not much I can tell you that will change your mind.
That being said, us team is pretty middle of the road internationally, but we are lucky to be in an easy region, so we get to go deep into the international tournies.