It is like suggesting congress has the power to define "arms" or "speech."
If the Constitution granted Congress the power to establish rules for keeping and bearing arms or speaking freely, I might ask those questions, but it doesn't. The Constitution explicitly prohibits Congress from establishing rules that infringe upon those rights.
Whereas, the Constitution grants Congress the power to establish a uniform rule of naturalization, which means not only that Congress has the power to say who must naturalize but also that Congress has the power to say who does not need to naturalize.
As Justice Gray wrote, there has never been any doubt that children born in a country of citizen parents are natural-born citizens. There have, however, been doubts as to all others. Thus the need for a uniform rule of naturalization.
You don't think the right to be an American citizen is a right which can be infringed? Have you not noticed the massive populations of "anchor babies" which have been created?
They are here illegally, and are therefore taking away from Americans the right to decide whether or not to include them in our national character. The same thing with "birth tourists."
It is as if by sneaking into our house to be born, they could claim our family name.
Yes, the right to be an American Citizen *CAN* and *IS* being infringed, by others who are claiming a right to which they are not entitled.