I did have a bit of bother.
I was in transit in LA on a flight back to Blighty from NZ with my missus and daughter. I was carrying a Playstation 2 that I had bought in NZ. The US border chappies asked, ever so politely as they are wont to do, why the feck I didn't buy it from the US because it would have been cheaper.
Knowing at the time how easy it was to confuse US immigration, I bit my tongue by not going into too much detail about exchange rates, duty etc. I really didn't have the patience to explain the principles of simple arithmetic to them as I was about to miss my flight.
My recalcitrance seemed to annoy them a touch so the c-units took me away for questioning which made me miss my flight. I will never forget the look on my wife's and my daughter's faces when they took me into the interview room.
In fairness US Immigration did put me up in a particularly lovely LA hotel room that night along with another 10 detained chaps. I did manage to get a bit of sleep in spite the thought of being bummed by the aforementioned. The rather fetching tones of the local working girls plying for trade in the hallway still keep me awake at night.
.
The new day made everything seem better. The US authorities made the flight rather special by giving me a specially fitted pair of silver bracelets which they insisted I keep on until the plane took off.
I'm often asked why I don't feel like going back to the US any time soon....