Who did they give that authority to, pray tell?
Thanks for the opportunity Non-Sequitur.
Article 1 Section 8: The Congress shall have the Power To ...Establish an uniform Rule of Naturalization...
Article 1 Section 8 the basis for the 14th Amendment, “All persons born or naturalized in the United States and subject to the jurisdiction thereof...” So the framers gave us Article 1 and, since they also provided the amendment process, they gave us the 14th Amendment, which some claim is redundant.