It's a soft skill: Profiling and most of the times intuition.How would any border customs officer know if a woman is working as an escort if she does not do a lot of back-and-forth travel and is never caught with too much cash?
Not just in the US, but also in other countries.
Phone search? Online profile?
Obviously if a well known profile as Indy, it would be easier, but some low profile, used to work at agency let’s say I would wonder if they succeeded to find out
Border control being usually "mean" is a way to shake people who are stressed about crossing the border.





