I recently went through Hawaii, and I must say I was treated very decently in both directions. I've travelled through LAX on and off over the years, had a PortPass when they were available, and the only time times there were hassles were when I was doing something or carrying something that required slightly more attention. Even then, the matter escalated in a manner I was comfortable with.
On the other hand, a US-born, US citizen friend of mine is related to the first US ambassador to Mexico who could actually speak Spanish, is an honorary goodwill ambassador for a sport the US excels in, and is routinely treated like a turd stuck to Immigration's shoe, so I guess YMMV.