[jcrawfordor]

TSA does more than just the security checkpoints, even at airports with privatized screening TSA does all of the back-office work, including some on-site staff. The physical screening is the only thing that can be contracted out, not the whole rest of the process like maintenance of risk databases.

What might confuse things a bit is that this incident happened hours before ICE agents started reinforcing TSA at checkpoints and seems mostly unrelated, other than establishing the general principle that ICE will arrest people at airports based on tips from TSA's flight booking records.