Took direct CUN-MKE Delta flight last Saturday. Flight attendants did not hand out forms to US citizens so I assumed MKE had APC kiosks. When I got there, I saw 2 Global Entry kiosks (MKE not listed as GE airport) so I used one. Out the door in about 2 minutes with carryon.

The rest of passengers were rather upset to find out no APC and handed forms to fill out.

ps. GE kiosk spit out form that was at least 2 feet long..... must have been new machine.