What do they do at the cage if you refuse to show id?

Say you bring chips to the cage. They ask to see your id and you don't have it or don't show it. What do they do? Can they confinscate your chips?
This happeened to me one time and the casino just gave me the chips back and refused to cash them and I left. Is this standard in all casions?
What happens if you are being 86ed? Do you have to cash the chips or can you legaly take them out of the casino with you?