> Purely hypothetical as I can't see why customs officers would want to deny citizens entry (providing they're not racist etc). Well, you already provided one

> Purely hypothetical as I can't see why customs officers would want to deny citizens entry (providing they're not racist etc). Well, you already provided one answer to your own question. But another is that plenty of people in law enforcement in the US are there because they want to have power over people, CBP included. So why would they deny entry, or make it a hassle? Cus it's fun to them to have the ability to ruin someone's day on a tiny whim; It makes them feel powerful.