Get detained in a tiny cell at Houston airport for 12 hours with no explanation (happened to my father). Get your entry denied and have your vacation plans + al

Get detained in a tiny cell at Houston airport for 12 hours with no explanation (happened to my father). Get your entry denied and have your vacation plans + all the money you spent on hotels/rentals/etc go to waste (happened to a friend of mine). Speak to any foreigner that has had prolonged contact with US immigration/border agencies (particularly if they are from a poorer country - doubly so if it's a muslim country) and you will hear plenty of stories like that.