> I mean i literally was forced to get a real ID since i was in the US for more than 10 days (you can't drive on a foreign license longer than that in California and they hand out real ID licenses now).

If you intend to reside in California, you need a California license within 10 days of establishing residency (assuming you drive); but if you're just visiting for a month, I think you can use your out of state or foreign license. If you've got some authoritative reference that states a temporary visitor (less than 6-month) to California needs a CA license, I'd like to see that...