I told the border patrol agent at the immigration checkpoint I am a US citizen and provided my driver license. I refused to answer other questions. I did not consent to a search. They then brought a dog over to sniff on the outside of my vehicle. The dog ended up scratching my paint. The dog did not find anything. I have video of this and then the dog handler walked by the other agent who had my driver license to tell her I could be released. I told them that something hit my vehicle and I wanted to see what damage was done. They refused to let me out of my vehicle to see the damage. Now I have a door that is damaged. Not happy. I'm not sure what I should have done.