US airports see shorter lines as TSA workers receive overdue pay, though delays persist.
LaGuardia still struggles with delays, passengers face waits up to two hours.
Death of Mexican detainee in US custody prompts protest from Mexico's President Claudia Sheinbaum.
Barbie Dream Fest refunds after fan complaints of poor setup and disappointing swag bags.
US sectors must improve customer experiences amid growing pressures and complaints.