[Poohbah]

Then say, "No thanks!", and turn around and walk away.

See if they let you walk away.

Well, you gave anyone with an IQ greater than 3 probable cause to be suspicious of you...

See if you can still refuse to consent to a search.

Check out the case law regarding the discretion of police officers to search persons acting strangely in the immediate vicinity of a port of entry into the United States.

[Libertarian Billy Graham]

#891 to you obviously

[Bob Mc]

What would I care about the law at a Port of entry of the US, or need to know, if I just want to travel from Podunk Indiana to Cowtown Kansas.

What's come of this country when a citizen has to know every nuiance of every federal and state law, or risk being a criminal from being a stupid redneck who decides to turn around at a security checkpoint?