Birthright

There has been a debate over the 14Th Amendment, which stated that all people born in our country are automatically citizens, is it heir birthright, that's the question? Are illegal aliens taking advantages of our system, bearing children here, putting us on the spot of separating families, which morally we can't do. What is the intent of the Constitution, it restored the rights of former slaves after the Civil Wars, despite the existence of segregation. It doesn't applied to native Indians per Supreme Court decision that they are tribes of a sovereign nation with autonomy status within our frontier. It doesn't apply to children of foreign diplomats. It doesn't apply to cheap Chinese labor that laid the tracks of our railroads. It takes an act of Congress to change our attitudes then. We got ourselves into this mess, granting "blanket" amnesty. The only solution I could think of is to annex Mexico. What's your opinion on this matter? Our President threaten to sign an executive order to that effect, but I don't so, he knows he can't rewrite our Constitution, nor repeal any of its amendments.