I think Americans are more fed up with Rules of Engagement that tie our boys hands. Go in...kill all the bad guys, level the place like Dresden. Glass factories if needed. Then come the hell home and let the savages deal with the aftermath. While home do border patrol. Someone gets froggy you go shut them up as well. No more ROE that sends our troops out without ammo and unable to engage threats with a BFH. WTF is up with that??.
Just my opinion, but I think it is much simpler than that. Americans are just tired of the ongoing conflicts. In fact, if the MSM was still covering Iraq and Afghanistan, Obama’s numbers would be in the crapper. It’s amazing that so many troops are still over there, dying, and yet we don’t see it ever mentioned anymore in the press.