Well, OTL, the Nationalists in Taiwan are now the ones most hepped-up about closer relations with the mainland, and I don't think that's the USA's prefered vision for Taiwan.
But, of course, that's because the continued existence of Communist China introduces a distorting factor into the proceedings: the USA doesn't care much for the Communists, and the KMT wants better relations with Beijing, so the USA is on the opposite side of things from the KMT.
But in the world where the KMT is Beijing, and the Communists are just a bunch of pamphleteers vying with Dianetics for public attention, I dunno. It might depend what sort of economic policies the KMT pursues as the government of China. If it's a protectionist and/or mercantilist system, the Americans might not to be too crazy about that, and you'd see something like the Gephardite anti-Japanism of of the 1980s, only amplified by about 1000 because China is a huge country on the ascension.