Before the fight against fascism convinced FDR that it was in his country’s interest to help bring order and prosperity to the world, the country was hostile towards immigration, scornful of trade and sceptical of foreign entanglements. In the 1920s and 1930s that led to dark times. It could do so again.

Goes straight from isolationism to ostensible Holocaust reference. They can't go 5 minutes without it.

Also the senate was clinched by the election of another Jew.

benign internationalists

This is how they see themselves.

Before the fight against fascism convinced FDR that it was in his country’s interest to help bring order and prosperity to the world, the country was hostile towards immigration, scornful of trade and sceptical of foreign entanglements. In the 1920s and 1930s that led to dark times. It could do so again.

Goes straight from isolationism to ostensible Holocaust reference. They can't go 5 minutes without it.

Also the senate was clinched by the election of another Jew.