Please remind both sides of this debate about how Mexican Authorities treat the illegal aliens coming into Mexico from South America.

Just a couple of excerpts I thought were very insightful:

"Mexico’s National Catalog of Foreigners tracks all outside tourists and foreign nationals. A National Population Registry tracks and verifies the identity of every member of the population, who must carry a citizens’ identity card. Visitors who do not possess proper documents and identification are subject to arrest as illegal aliens." (excerpt from politics4all.com)

"– Law enforcement officials at all levels — by national mandate — must cooperate to enforce immigration laws, including illegal alien arrests and deportations. The Mexican military is also required to assist in immigration enforcement operations. Native-born Mexicans are empowered to make citizens’ arrests of illegal aliens and turn them in to authorities." (excerpt from politics4all.com)