How would California exist without trade? Lol. They import all their oil, they import a shit amount of computer parts and small electronics to keep Silicon Valley running, and just a lot of manufactured goods in general since the states only real valuable exports are civilian airplanes and electronics (which are built from imported goods). Besides those two things pretty much anything and everything else is imported. Trade is essential for survival.
Was obviously a joke, but the majority of politicians from california are slimy corrupt scum. Gavin Newsom literally cleaned up the streets (showing they had the capacity to do so) just to impress XI Jinping and then after let it go back to a hellscape. He keeps lying about these riots because he so obviously wants to run for president. Obv not all our problems would be fixed, but a couple of them would be