American History: The Law Does Allow People to Be Denied Citizenship.

Densho Encyclopedia reports:

The first statute in the United States to codify naturalization law. Alternately known as the Nationality Act, the Naturalization Act of 1790 restricted citizenship to "any alien, being a free white person" who had been in the U.S. for two years. In effect, it left out indentured servants, slaves, and most women. This implied that black and, later, Asian immigrants were not eligible to be naturalized, but it said nothing about the citizenship status of non-white persons born on American soil. Subsequent nineteenth-century legislation included a racial requirement for citizenship. It was one of several early immigration laws that shaped the framework and outcome of the Ozawa v. United States case in 1922.

Just a reminder for those who think there's never been limits on who can come to the United States.