If we were to implement Mexico's Immigration Rules (including a Constitution Amendment) the screams of racism would be heard around the world (even more than now). To wit:
Chapter III
Foreigners
Article 33. Foreigners are those who do not possess the qualifications set forth in Article 30. They are entitled to the guarantees granted by Chapter I, Title I, of the present Constitution; but the Federal Executive shall have the exclusive power to compel any foreigner whose remaining he may deem inexpedient to abandon the national territory immediately and without the necessity of previous legal action.
Foreigners may not in any way participate in the political affairs of the country.
Already the illegals here in the USA are planning another May Day march. And I encourage them to do it. There is talk of ICE actually being on the scene this year.
Last year's marches are the gift that keep on giving.