How ‘Medicare for All’ became a rallying cry in California’s most conservative districts

ORANGE COUNTY, CALIFORNIA — “We have to make America mentshlekhkeyt again,” Rabbi Arnold Rachlisl declared with a grin at Sabbath service at University Synagogue in Irvine, California.

The rabbi was clearly proud of his joke. Mentshlekhkeyt means “humanity” or “human decency” in Yiddish, he explained to the crowd gathered at the synagogue.

Many in the congregation Friday evening had not been aware that the campaign event for Katie Porter would begin with a Shabbat ser...