First, I can understand how a person accused of a crime or a civil offense would want a trail by their peers and since so many residents of California are not citizens, well, what could be more fair.
Second, since any jury pay has to be reported on your income taxes and since I am sure that ALL non-citizen legal residents of California have social security numbers (even if they belong to someone else) this should be no problem.
I also assume that jurors will not need to speak English and that translators will be made available to them?
This will be so interesting to watch as California turns into a third world province within a first world country.
From their web site
The amount, $15.00 and mileage of $0.34 a mile one-way beginning on the second day of service, is set by statute.