California is cream of the crop for nursing. They are the only state with ratios mandated by law, that hospitals abide by. And the majority of hospitals are unionized. Especially northern CA, represent by the CNA which is a very strong union.
Therefore, hospitals can afford to be selective in their candidates, such as requiring a year of existing experience in XYZ specialty.
Your best bet would be to get OR experience where you currently are, and then move. Or apply for rural communities in CA. Likely those in the Central Valley excluding Sacramento region. Might have better luck there