I'm going to America and specifically Texas. However my flight lands in Mexico and I'm crossing the border on foot. My friends are giving me a lift to the border bridge, but they are carrying on in car as they are American citizens and there is less fuss, as I am traveling as a UK citizen, I need to do the full border process and why I'm visiting things.
If I leave my bags in the car with my friends, and they take it to my apartment, and I cross with just the things I need such as passport, wallet, ESTA form, and things like that, will they challenge why I have no bags, and is it okay for my friends to take my bags for me?
Also, is there anything I should be ready for crossing the border? (First time going to Mexico or America)