[Ginifer]

"What would you say if I told you these U.S. Citizens were forced to be fingerprinted and photographed before CBP let them go?"

I'd say ok. If you decide to leave the country, then you must abide by the laws of the country you go visit. If you don't want to participate or "put-up" with inconveniences then keep your butt at home (problem solved).

[Marine Inspector]

This is their country. Their country is fingerprinting them.

I guess you would not mind me fingerprinting you?