When Donald Trump was elected president of the United States, the Jewish reaction was pretty well muted. We did not know a whole lot about the guy. Seemed pretty decent, had always been friendly to the Jewish Community.

We should have looked under the rock. Two years before, Trump founded the “Birther Movement” questioning the legitimacy of Barak Obama as president. Trump said Obama was born in Kenya. There’s the first hint. A Black president could not be legitimate.

While he never took more than 25 percent of the vote in the primaries, Trump won the nomination. The Republican Party allowed 16...