Gosh, I thought TSA's job is mission creep from CBP.
I've seen them ask a lady who presented a US passport to show her "other" passport which was one from a Latin American country. I thought for the purpose of TSA ID=ID and visas shouldn't matter.
Yesterday I saw the lady in ROC thoroughly examining the Mexican passports for 2 business men in front of me. It took about a minute and thirty seconds each to determine something. Maybe they didn't look "Mexican" enough to her b/c they were white

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