Then explain to me how it is that children born in the U.S. of two illegal alien parents are citizens of the U.S.
The only circumstance where Natural Born Citizenship is required is to be eligible to become President.
I have three sons.
#1 is a US Citizen at birth even though he was not born in the US. His citizenship was derived from one parent, (me) being a US Citizen. He is not a natural born citizen.
#2 was born in the US, so is a US citizen though place of birth AND having one US Citizen parent. He also is not a natural born citizen.
#3 was born in the US, by that time his mother had become a US citizen. He has two US citizen parents and was born in the US. He is a Natural Born Citizen and therefore the only one of my sons eligible to become President