Do you have worries about crossing the border?  Does it make you feel uncomfortable going through the interrogation process?  I have no real worries about crossing, but I can see how it could make people uneasy.  Listen to the audio of a Canadian couple that recorded their interrogation about 2 years ago.  The two were just on their way to shop at the mall in Niagara Falls.  It's kind of a long clip, but its worth it.