If you want to stretch the point, it can be argued that the US/NIH have been less than clear on gain of function research policy over the years (not the least driven by ambitious *US* researchers) and that a clearer more carefully constructed policy on GOF by the US research establishment and funders would likely have had a certain amount of influence all over the world, including Wuhan. In the *most* general sense you can certainly lay some of the ambiguity on GOF on US administrations who over the years have appointed political hacks with bad agendas and 'kill the beast' mentalities to US scientific agencies. This is for sure a 100,000 ft level critique, but I'm just pushing a point that a lot of things have consequences that appear many miles down the road and in unforeseeable places when the US makes bad decisions for bad reasons.
And Xi is probably dealing with the same kind of realizations on his own end. Whatever else is true about his ethics and political ambitions, he's no fool, he has no interest in killing his own people (even if he only sees that as the Han Chinese), and he's had enough scientific education (probably more than the average US president) to have some appreciation of what happened, the how and why.