This is where we disagree:
1) The constitution does not define citizens via Article IV section 2. That passage difines the requirements for the President. Further the 14th Amendment, REESTABLISHES a means of justification for citizenship at birth (jus soli). Note that the jus soli was removed by Act of Congress and it required an amendment to re-apply it and make it more difficult for future acts of congress to alter it.
2) Article I Section 8 is not limited to making citizens out of non citizens. The power is for ALL rules, including who does not need to be naturalized (born a citizen)
Look again. Pull out your constitution and look.
The constitution is a jus soli regime. ALL nations are. A jus sanguinas regime disperses citizens to the four corners of the earth, and geographic boundaries become irrelevant, except as a historical artifact.
Congress can pass all the jus sanguinas rules it wants to. That is act of naturalization.
For the third time, I urge you to stop your civil debate with me. You are pushing close to my limit of patience.