There should be roadblocks and passport control at all roads and ports of entry into/out of California.
We noticed as we were escaping California on our way to Utah, that they were building huge multi-lane port of entry inspection stations on the highways. They are doing that to intercept any firearms and ammunition that might be being brought into California from out of state. . . As if it IS going to become a foreign country border with customs inspection. They asked us when we went back into California in July after buying our new house. . . “Did you buy any ammunition that you are bringing back into California?”