What does Mexico require for those entering their country?

While all these Mexicans and other Hispanics are screaming bloody murder in Arizona and other States across our country and don't even want to show any proof that they even have a legal right to be here, this is what Mexico requires:

Entry to Mexico: As of March 1, 2010, all U.S. citizens – including children -- must present a valid passport, book or card, for travel beyond the “border zone” into the interior of Mexico. Entry by any means, for example by plane or car, is included in this requirement. The “border zone” is generally defined as an area between 20 to 30 kilometers of the border with the U.S., depending on the location. Stays of less than 72 hours within the border zone do not require a visa or tourist card.

U.S. citizens traveling as tourists beyond the border zone or entering Mexico by air must pay a fee to obtain a tourist card, also known as an FM-T, available from Mexican border crossing points, Mexican tourism offices, airports within the border zone and most airlines serving Mexico.

Upon arrival in Mexico, business travelers must complete and submit a form (Form FM-N 30 days) authorizing the conduct of business, but not employment, for a 30-day period. Travelers entering Mexico for purposes other than tourism or business or for stays of longer than 180 days require a visa and must carry a valid U.S. passport. U.S. citizens planning to work or live in Mexico should apply for the appropriate Mexican visa at the

Embassy of Mexico