the US has agreed not to acknowledge Taiwan's autonomy officially. Words, like phone calls of congratulations or delegations at inaugurations mean nothing to China. Actions mean everything. Words only matter to liberals, and China has played us for a long time because this kind of policy.
Only the left could pretend to see the Trump acceptance of a simple phone call of congratulations from the Taiwanese president when he is not even officially the president yet as significantly worse than the invitation of an entire Taiwanese delegation (short only go the Taiwanese president) to the official presidential inauguration of Barack Obama.
Also, if you are honest enough to admit it, you would acknowledge that your news sources never even mentioned this little fact, and that my post was the first that you had ever heard of this fact.