In UC, you are most likely in-state for tuition if you got green card 1 year before the college starts and your parents are living in California and paying taxes.
Yes, but sometimes indirectly. For example, California statue guarantees that “Each campus’ admission office has the responsibility to determine the residence status.” Each school sets rules and makes final decision, and it often works for a student’s favor in special situations, which is quite often the case with immigrants.