They've been going so hard at that for so long it's almost comical to believe that he has anything to hide in there that's meaningful.
They're gonna find nothing then make some shit up then that won't be potent enough and they'll embarrass themselves again.
It's a typical strategy of fucking with a cat with a laser pointer.
Make them expend tons of time resources and media hype going after something that turns out to be a literal nothing burger and them losing credibility when it falls apart on them.