Trump was a accused of xenophobic actions because of his propensity to blame others. The travel ban, which was not really a ban, but a restriction, was consistent with that philosophy: things go wrong, find a boogeyman and raise the draw bridge (or build a wall). He banned foreign nationals that had been to China in the previous two weeks from entering the country. He did not ban Americans from going there and returning, which was every bit as problematic.
Though this move as A step in the right direction, that is all it was A step. He raised the draw bridge to keep other out. He then did almost nothing for six weeks, denying this was even a problem. Sorry, but hitting a solo homer in the first rarely is sufficient to win the game... and certainly not this game.
Trump, Biden Spin China Travel Restrictions - FactCheck.org
Obviously the travel ban was insufficient as the US now has more CoronaVirus cases than anywhere else in the world.... and that is known cases. We also have done a very poor job on per capital testing. The number of cases is likely much, much larger than we know.
Again, show us an expert that says Trump has done a great job on this..... we are waiting.