I travel often and recently had a terrible experience flying through San Diego International Airport. The CBP officers at this airport are the worst I’ve seen. There is a lack of efficient staffing. The staff members that are present are generally unhelpful and disinterested in helping customers. I overheard more profanity during this trip between the TSA agents than in the seediest bar. The TSA agents were rude, intrusive unhelpful, and disrespectful. They seemed to have no interest in helping travelers, and were more concerned with enforcing arbitrary rules. They were unprofessional and made me feel uncomfortable and unwelcome. The lines were extremely long and slow, and the agents were uninterested in helping to speed up the process. Avoid this airport at all cost when entering the U.S.