Okay
You win
Lets just pretend
I am a Federal Agent and I told the "suspects' that you are "being denied entry into the US based on a relatives conviction on terrorism chanrges and if you will agree to answer a few questions by the FBI we may relent"
And you say STFU or FOAD I am supposed to interprete that as they invoked the 5th ammendment rights
Nope
Ciao, Time to run