The initial U.S. response to the virus was to do nothing. It will go away soon. We can blame it on China for not communicating it sooner, but what would we have done? Things would be better if we had done nothing, sooner?
Also, China could have locked down travel from China that might have helped.
See [1] and [2] for fact checks on this point.
[1] https://www.factcheck.org/2020/05/trumps-flawed-china-travel...