Again, I don't disagree. But if you're going to put metal detectors in congress, you need to do the leg work ahead of time to understand how you can mandate and enforce those metal detectors being required to enter the building.
Putting metal detectors in and not foreseeing Republicans doing the most obvious thing in the world and refusing to go through or fucking stepping around them is ridiculous. How was that scenario not accounted for prior? Whoever was in charge of that should have had their ducks in a row and figured out their legal options to enforce it. When they put them in they should have send a memo out that outlined the changes, the legal standing for making the change, and what the consequences for stepping around them would be (ideally arrest). And then actually follow through.
If it's completely unenforceable, which it appears to be, then why do it? Congratulations, you've made sure all of the sane congresspeople don't get their Leatherman in while the idiots just walk around the detectors with their pistols. Incompetence. Really great job everyone.
A symbolic metal detector that is completely useless, adds no value, and isn't enforceable sounds like something Trump would do. If you do something that sounds like something Trump would do, you are probably not a competent person or organization.