I will be driving to Del Rio, Texas (close to the Mexican border) to visit my son who is stationed there and just returned from Iraq. I will be armed (I have my cc permit from OK) and if I remember correctly the Border Patrol only stops you on the way back north. The stop is about 25 miles from the border. They let the dog sniff around the car and just asked if we were US citizens and where were we headed? No driver license check. Do I have to (or should I) tell them I am carrying and have a permit? I want to do the right thing and avoid any problems.