To my knowledge, CA PE board accepts foreign non PE license engineers.
Somewhere you will need to explain where you got those years of experience.
Some countries have something siimilar to the PE board in USA . Usually they have a number. Your non PE references can put that number as the license number and maybe in brackets the country from where they got that license.
That should be ok for CA board. Meanwhile, other states, do not allow non US license. (except CANADA).