They have been doing that in PA for a long time. I once had a friend get pinched because the agent thought the bar had over served him. My buddy had suffered a stroke years earlier and his speech was ALWAYS slurred.

Word to the wise, if there is someone at a bar who appears to be solo and who is not drinking or might only be drinking "disguise" drinks like how a club soda could look like a gin and tonic etc. it's time to switch bars because things can only get ugly.