The Trump Star Chamber and the Ukrainian phone call BS taught us that the democrats view the impeachment process as just another way to do oppo research and occupy news cycles.

Most Democrats believed that Trump genuinely had broken the law...enough that they could actually get an impeachment vote passed.

The difference here is that there really isn't an argument that Mayorkas has broken the law....just that the GOP really disapproves of the way he's doing his job. So the GOP is probably going to fail to impeach him, on a bipartisan vote.

I suspect that will land differently with their constituents. Sure, you get more media coverage for your hearings if you call them an impeachment hearing, rather than a committee hearing on mismanagement of DHS. But the downside to that is that you raise expectations that you can deliver something while you control the House, rather than add this to the list of things that you failed to do with your majority.