A possible solution

Of course Congressional hearings are more about grandstanding and speech making than fact finding. And of course politicians only lie when their lips are moving.

So maybe we can solve a bunch of problems by placing all committee members under oath at the beginning of the hearings. They could ask any questions they wanted to, but if they make statements of "fact," (such as the whopper that parks did not close in previous shutdowns) they could be imprisoned for perjury.

Oh wait! I forgot. Lying to Congress only matters if you are lying about a blowjob, right?

Why did national parks close? Ask the Republicans. - The Washington Post