There was a contentious back and forth between Jerry Nadler and several GOP members over the use of face masks. The GOP pushed back, resisting the masks after Nadler said he wouldn't recognize any members who aren't wearing a mask.

The directive initially came from Democrat House Speaker Nancy Pelosi who wanted the House committee leaders to enforce a mask policy, but it clearly did not last long once the GOP members defied it and didn't seem to care about any verbal warnings from Nadler.

"Guidance from the Capitol physician issued late Tuesday, which was requested by Pelosi, said masks are now required for any House meetings “in a limited enclosed space, such as a committee hearing room, for greater than 15 minutes.” A senior Democratic aide said Tuesday that Pelosi had asked committee chairs to “enforce rules of decorum and exclude members who fail to comply." (The Hill)

Republicans were previously not honoring any guidance from the physicians who wanted face masks weeks before.

At some point Jerry Nadler stepped in and tried to enforce it, but he failed.

Nadler said, "wearing a mask not only helps protect you from getting sick from this deadly virus, it helps protect the other people in this room from getting sic... In light of the attending physician's new guidance, I therefore fully expect all members on both sides of the aisle to wear a mask at all times that you are not speaking. If for whatever reason you are not willing to wear a mask, the House rules provide a way to participate remotely from your office without being physically present in this room."

Didn't work. GOP members did not follow his directions. It appears as though members were socially distanced, but some simply did not care to wear a mask. Many of them remove the mask when they're speaking anyway, so the mask might have seemed mute at that point.

Rep. Jim Jordan wasn't wearing one. Neither was Rep. Tom McClintock.

Nadler said, "I would remind the gentleman, and other gentlemen, that for the safety of their colleagues and the decorum of the House, they should be wearing masks. Mr. Jordan."

Nadler ignored McClintock when he wanted speaking time because he wasn't wearing a mask.

McClintock, when finally called upon, said "I consider masks much more effective at spreading panic and much less effective at stopping a virus."

But Nadler then was victorious over McClintock, as he gave in and put a mask on.

A spokesman for Republicans on the Judiciary Committee said that "it’s very unfortunate that people are more focused on who’s wearing a mask than the important task of reforming policing in America."

Politicians are not required to wear a mask while speaking on television because it prohibits people who read lips from learning what they are saying.