From reading the online GJ Sentinell, the TSA in Colorado are proposing airport specific identification, if the airport has scheduled services. GA is up in arms. An air taxi pilot would need an escort if he landed at an airport for which he did not have a badge. And as much use is made of airports out of hours, this could be very limiting. The position of en-route pilots stopping to refuel at card operated pumps has also been raised.
This is totally different from the EU situation, where one airside badge seems to suffice.