Cal. Bus. & Prof. Code § 6103.7

It is cause for suspension, disbarment, or other discipline for any member of the State Bar to report suspected immigration status or threaten to report suspected immigration status of a witness or party to a civil or administrative action or his or her family member to a federal, state, or local agency because the witness or party exercises or has exercised a right related to his or her employment or hiring of residential real property, broadly interpreted. As used in this section, “family member” means a spouse, parent, sibling, child, uncle, aunt, niece, nephew, cousin, grandparent, or grandchild related by blood, adoption, marriage, or domestic partnership.