USFREEDOM911
MAKE AMERICA GREAT AGAIN
The point is that almost no one refuses to talk to Federal agents.
Your concept is inane
Almost no one!!
So you're not sure.

Let me help.
Do I have to talk to the FBI?
No. The FBI does not have the authority to make anyone answer questions (other than name and address [see errata]), to permit a search without a warrant, or to otherwise cooperate with an investigation. Agents are usually lawyers, and they are always trained as investigators; they have learned the power of persuasion, the ability to make a person feel scared, guilty, or impolite for refusing their requests for information. So remember, they have no legal authority to force people to do anything -- unless they have obtained an arrest or search warrant. Even when agents do have warrants, you still don't have to answer their question.