We knew or should have known the virus was coming for months before it was a problem in the US. It would take an incredibly enlightened politician not to try and scapegoat China for our failures, and they know this. Why gamble on our goodwill amidst all this rhetoric?
China's behavior is concerning.
Even with this data US and other western countries dismissed it as non-threat for over 3mos while ridiculing China for 'draconian measures' and violating human rights.