The 14th Amendment was created to confer citizenship upon former slaves ONLY, who had recently been freed during the Civil War (1861 – 1865.) It was not intended to make a citizen of any person who just so happened to be born on U.S. soil to foreign parents in the country, legally or otherwise.
The man who authored the amendment in 1866, was Michigan Sen. Jacob M. Howard. Howard explained in writing exactly what the scope of the law was when he introduced it, making it quite clear that it was referring to granting citizenship to the recently freed slaves only, not foreigners or even Native Americans.
According to The Federalist Papers Project, Howard wrote, in part, “that every person born within the limits of the United States, and subject to their jurisdiction, is by virtue of natural law and national law a citizen of the United States.” But Howard continued,(and this was never included in the Amendment) “This will not, of course, include persons born in the United States who are foreigners, aliens, who belong to the families of ambassadors or foreign ministers accredited to the government of the United States, but will include every other class of persons.”
Donald Trump would be right to call for an end to automatic birthright citizenship for the children of illegal immigrants born in this country, and he has the plainly written intentions of the man who wrote the law for evidence.