JTA — Ben Shapiro walked onto a Heritage Foundation stage on Wednesday and used it to draw a line against Tucker Carlson and a strain of conservatism Shapiro warned is drifting toward conspiracy theories and antisemitism.

For a talk that lasted about an hour, Shapiro, one of the most prominent Jewish voices on the American right, denounced Carlson by name, arguing that the former Fox News host no longer belongs inside the conservative movement and urging the institution hosting him to enforce what he called “ideological border control.”

“A conservatism that treats Tucker Carlson as a thought leader is no conservatism,” Shapiro said. “If conservatives do not stand up and draw lines, conservatism and the dream of America itself will cease to exist.”

The speech was as notable for its venue as it was for its content. It was hosted by Kevin Roberts, Heritage’s president, who has come under fire in recent months for publicly defending Carlson after Carlson interviewed Nick Fuentes, a white nationalist and Holocaust revisionist.........

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