Donald Trump’s blathering about Jewish voters endorsing Democratic candidates brought to mind a nearly six-decade-old commitment stated by a previous president of the United States.

Trump’s statement has been taken by some to be an anti-Semitic utterance from someone who presumes political candidates must be “loyal” to Israel and to Israeli government policies. So the rationale — if you want to call it such — is that Jewish voters would be “disloyal” to Israel if they back candidates who might be not quite as friendly to Israeli policies as candidates from the other major political party.

This is utter hogwash, claptrap, bull corn — whatever you want to call it — from the president.

In 1960, Sen. John F. Kennedy was running for president as a practicing Catholic. There were whispers that turned into shouts about whether a Catholic president would take his marching orders from the Vatican. Sen. Kennedy sought to assuage those concerns and he did so in a most brazen manner.

He attended a Texas convention of Protestant clergy, stood before them and said categorically that he would take the oath of loyalty to the U.S. Constitution. It would be to that document that the president would adhere.

Presidents do take an oath to defend the Constitution. They do not defend the Bible, or the Torah. Their loyalty first and foremost is to the secular document crafted by the nation’s founders in the late 18th century.

Donald Trump’s abject ignorance of the very oath he took in 2017 reveals the danger we face if we return this guy to office in 2020.