Our constitution is in need of updating along the Mexican constitution’s lines:     
 
Amendment 28:  Foreigners may not in any way participate in the political affairs of the country.

Amendment 29:  Americans shall have priority over foreigners under equality of circumstances for all classes of concessions and for all employment, positions or commissions of the Government in which the status of citizenship is not indispensable.

Amendment 30:  The American President and all American Congressmen, Senators, Cabinet Officers, Supreme Court Judges and clergy must be an American citizen “BY BIRTH."

Amendment 31:  Only Americans by birth or naturalization and American companies have the right to acquire ownership of lands, waters and their appurtenances, or to obtain concessions for the exploitation of mines or of waters or of ports.

Amendment 32:  Federal protection against undesirable aliens resident in the country is guaranteed.

Amendment 33:  In cases of suspected wrong doing by a foreigner, any person may arrest the offender and his accomplices, turning them over without delay to the nearest authorities.

Amendment 34:  The Federal Executive shall have the exclusive power to compel any foreigner whose presence he may deem inexpedient to abandon the national territory immediately and without the necessity of previous legal action.
 
There, that should about take care of the illegal alien problem.  It works for Mexico.