I think you mean to say “officially recognize the Taiwanese government as a legitimate global government” as Taiwan enjoys great support in congress, to a degree. And Trump as never threatened to recognize Taiwan, and since it is not in his direct best interest to do so, I doubt he ever will. He did threaten to alter the “one China” stance, but a quick meeting with Xi put the kibosh on that. He is even quoted as saying “I will refuse any further overtures from Taiwan.”
That said, what would the US recognize? The government here has never made a formal declaration of independence, and if they did, that could drastically change the dynamic of the current situation in East Asia. This would mean the US would just be re-recognizing the ROC. It would join the 20 third world nations Taipei plays sugar daddy to.
Would anyone else have Trump’s back? I doubt it. Lets look at the UNSC. Russia would most likely side with China on this (the enemy of my enemy), France would probably obstain, and Britain has enough going on with Brexit, it has no time to deal with Taiwanese independence. Besides, it is on the other side of the planet, who cares?
China has promised war if Taiwan ever did such a thing. If Beijing holds true to that, would the US make nice on the TRA? The US has spent the past 16 years involved in 2 wars, one of which is on going, with no real end in sight. (Seriously, the British could not tame Afghanistan. The Russians could not do it, even after another try. Even with US involvement, it is hanging on by a thread. Afghanistan has been in a state of perpetual war for 45 years. Whose idea was it to go in anyway?) So, since the Korean show is about to restart, adding another cold war leftover to the mix might be a hard sell to the public. After all…
Can the US economy take a hit caused by a sudden end in manufacturing imports? Who is going to pay to get all those factories online to begin making what will be lost from China? I am not concerned with how China will weather any economic threat.
China is losing its patience with Taiwan. Since their bodyguard is pre-occupied with NK, China could use this as an opportunity to solve the “Straits issue.” and Little Trump will not do anything. He is a capitalist. He and his daughter’s clothes are made in China. That is income for him. You think he is going to put his interests above anyone else’s, let alone Taiwan or even the US?