That’s impossible.
California is sighting no evidence so no cooperation with Trump’s team.
Case closed - move along tin foil hat monkeys.
According to The Heritage Foundation Voter Fraud Database, California had 22 voter fraud convictions since 2001, the most recent one was scheduled for sentencing on May 22, 2017, but the sentencing has been delayed to August 2017.
http://thf-legal.s3.amazonaws.com/VoterFraudCases.pdf