" Needless to say, Mexico carefully controls its own borders. In 2005, it caught and deported nearly a quarter million illegals, mostly from Guatemala, Honduras, and El Salvador.
Mexico thinks so little of our border, however, that its soldiers have made hundreds of incursions. In 2008, Edward Tuffy, head of the Border Patrol’s largest union called on President Bush to stop illegal crossings in which Mexican soldiers have threatened and even fired on US agents. On August 3 of that year, four Mexican soldiers crossed the clearly marked border and held a Border Patrol agent at gunpoint. “Time after time they have gotten away with these incursions,” said Mr. Tuffy, “and time after time our government has not taken a forceful stand against them.”
All political factions in Mexico are united in the view that the United States has no right to control its southern border. Felipe Calderon, who succeeded Mr. Fox, unswervingly maintained this policy. During his first state-of-the-nation address in 2007, he won a standing ovation by repeating the traditional government position: “Mexico does not end at its borders,” and, “Where there is a Mexican, there is Mexico.”
The view that Mexicans have a natural right to enter the United States explains the vitriol that met American discussions in 2006 about ways to stop illegal crossings, and an eventual congressional vote to build a wall along certain parts of the border. President Vicente Fox called the plan for a wall “disgraceful and shameful,” and promised that if it were ever built it would be torn down like the Berlin Wall.
Interior Minister Santiago Creel boasted that “there is no wall that can stop” Mexicans from crossing into the US.
Foreign Secretary Luis Ernesto Derbez warned that “Mexico is not going to bear, it is not going to permit, and it will not allow a stupid thing like this wall.” He even said he would ask the United Nations to declare the American plan illegal. "

― Jared Taylor , White Identity: Racial Consciousness in the 21st Century