What about "People in the USA are grieving because of China virus created to kill us, but we won't do anything against China because the first step of grief is denial"?
How does this sound?
It's completely normal to me to answer: well my friend, first of all a leak is a mistake, it's not intentional since, you know, the first who paid where the Chinese themselves, it would be pretty stupid to do it intentionally.
But if you really think things go that way because people do not understand who's their enemy (the Chinese who want to kill you by engineering a virus), what about all the countries that the USA has relationships to, to their advantage only, after killing their citizen, without even apologizing?
Should they cut the links too?
What about what the USA and UK did to Chinese people?
There's a reason why they made a cultural revolution and chose communism, and no, being a "democracy" doesn't make your country automatically better.
Spoiler alert: American people have lost many relatives because of their government.
So maybe it's toward them that they should be angry and ask for a change.
Even if it was a lab leak, the right solution would be cooperation, so that it doesn't happen again (because next time could happen to the US...)