November 15, 2017: This is a recent note to United frequent travelers in Houston — no doubt to follow at other US airports:
TSA Pre✓® program changes: As of February 2017, TSA has significantly reduced access to TSA Pre✓ expedited screening for non-enrolled travelers. TSA strongly recommends that you enroll in a DHS Trusted Traveler program such as TSA Pre✓, Global Entry, NEXUS or SENTRI to obtain access to expedited airport security screening.
For all important notices from United, please visit united.com/importantnotices.