I've heard that foreign passport holders can get scrutinized when visiting countries like the US, but it's rare for a US passport holder to get scrutinized but it does happen from time to time. When I fly to the EU or any well developed country like Japan, the passport control officer usually takes a look at me, my passport, scans the passport, and stamps it. But in some places I've had someone stare at my US passport for what felt like 10mins and ask a lot of questions. I was recently in Georgia and the passport control officer at TBS kept looking at my passport photo and back at me probably a dozen times. She then handed my passport to the officer beside her and started saying some things in Georgian. She looked through every single page with a light and checked the hologram. Then I got questions about why I was there, how long I was staying, where I was staying, if I knew anyone there, and what method I was using to leave the country. I've also had this happen in Ukraine (before the war). My only guess is they aren't used to seeing US passport holders in those parts.

What's your craziest passport control experience?