You do get searched by TSA if you are coming from outside the country. In recent years I've flown in from Mexico, Spain, India and the Dominican Republic. For each flight, the boarding gate was blocked from general access and the only way to get in was to go through a TSA search. They only had metal detectors, but my bags were still searched. Had I been carrying a large sum of cash (or anything else that needs to be declared) they could have contacted CBP at my departure airport.