There's no political upside for them. The Trumpian wing of western politics are going to believe whatever they want no matter what evidence comes out. There's a

There's no political upside for them. The Trumpian wing of western politics are going to believe whatever they want no matter what evidence comes out. There's a chance an investigation uncovers wrongdoing or recklessness at some level of Chinese bureaucracy be it a lab leak or just unsanitary meat handling or something else. Or they turn over every rock in Wuhan and still don't find conclusive proof of anything.