The DOJ says roughly 20,000 noncitizens received mail-in ballots in California and is demanding the state sequester those votes before they are processed.
https://www.foxnews.com/politics/california-must-respond-dojs-emergency-request-over-ballots-mailed-alleged-noncitizens-court-rules
https://www.foxnews.com/politics/california-must-respond-dojs-emergency-request-over-ballots-mailed-alleged-noncitizens-court-rules