No, not really. I will not physically block someone from walking past me at TDC. But if I haven't checked their BP, it's very simple to deny them entry to the checkpoint - and by that I mean have a LEO escort them back to the non-sterile area. No cans of worms here

I don't know what happened in phils run-in with TSA. I have seen his, uh, attitude here for some months, and have heard his side of the story, but I don't know why it ended with his arrest. But I wasn't there, so I do not know.

Like I said, I have had one person refuse to show me ID, and it wasn't a big deal. A young man, and he said something like what people on this site say about the ID check. I told him sorry, he couldn't enter, and handed back his BP. And then I called for the next in line. After I processed a few passengers he asked to speak to a STSO.

I explained to the STSO the situation, and she asked the guy if his ID was lost or stolen or missing. He confined he had it, just did nit want to show it. She too told him he couldn't enter, and left. No police called. After I processed a few more passengers he finially showed me his ID and called me a name as he bravely walked into the checkpoint

But as far as this overall thread goes, damaged ID is almost always no problem. Depends on how damaged and what part of the ID is damaged. For almost all passengers, it results in no delays.