Who's the 'counter-semitic candidate' in California Senate race?

President Trump is at the National Rifle Association convention in Dallas today. Back in Washington, the Stormy Daniels/Rudy Giuliani/Michael Cohen hush money furor isn’t letting up. Also, the California Republican Party convention begins today in San Diego. The party is distancing itself from Patrick Little, a self-proclaimed “counter-semitic candidate” running for Senate.