SongKong is headless Jaikoz - but Picard isn’t headless so if you fixed with Picard you could have fixed with Jaikoz. But SongKong with the single album feature would work for you.
I don’t think the idea of only allowing match to USA CD’s would work that well because too often would lead to no matches because there was only a worldwide CD, or UK CD or US Digital release in database that would usually be fine but was disallowed because of criteria. But you can already have it prefer US CD releases.
Perhaps you could run Create Support Files because I’m suprised that SongKong is matching wrong tracks, whilst it may not always matched first choice album it should only match album with all tracks matched correctly.