There is no question that Taiwan was once part of China. Today it is separate democratic entity with no desire to be reunited with a communist China. The new President of the United States is not going to tolerate communist Chinese expansionism in the South China Sea and he is likely to enlist the aid of Taiwan in thwarting those intentions. Unlike our PM, Trump is not going to be getting  cozy with China anytime soon. More likely he will be courting Putin to alleviate pressure on NATO and to develope another ally to help keep communist China in check.