They already know the origins of the virus and they knew even before the outbreak was reported in Chinese media.
The investigation is an attempt to buy some more time while they figure out who to blame and how to organize the cover up in the media and manage the public reaction.
In 2014 Obama banned gain of function research in the United States, which allowed Fauci and the NIH to start funding the WIV to do the research instead. Think of this as offshoring American production to China, a bit like sending over one of our steel mills but for bioweapons.
Why would the US government want to offshore their bio research to a hostile power? For the same reason Apple makes their i-phones in Chinese sweatshops, to escape American regulatory oversight and standards.
One of the last acts of the Obama administration was to rescind the ban on gain of function research in 2017 during the transition. Why would they do this? Because they knew that when it came out that this research had been subcontracted to the Chinese it would create a massive shit storm and they wanted plausible deniability.
We know that Covid was created in the Wuhan Institute of Virology. The WIV is controlled by the People's Liberation Army, and is a biowaepons lab (ignore the nonsense about developing safe vaccines).
We know it escaped or was released some time in late October early November 2019.
We know that the research that created Covid was funded by the American government.
What we don't know is whether or not the release of the virus was accidental or deliberate.
We also don't know the exact motivation behind the Obama administration's decision to fund the research but we can look at some data points and can draw some conclusions.
Canadian media has begun dooming about a "delta strain" and fourth wave lock downs are on the horizon despite vaccinations. Holy fuck it will never end.
They're managing expectations once it becomes clear that the vaccinated are becoming infected.
They'll blame the variants, mutated strains.
They'll blame the un-vaccinated for allowing the coof to circulate.
They won't blame the vaccines for being useless at vaccinating.