Now this is wading into new waters--the Mexican government has filed a challenge to Arizona's immigration law, saying it is unconstitutional:
Citing "grave concerns," Mexico said its interest in having predictable, consistent relations with the United States shouldn't be frustrated by one U.S. state.
Mexico also said it has a legitimate interest in defending its citizens' rights and that the law would lead to racial profiling, hinder trade and tourism, and strain the countries' work on combatting drug trafficking and related violence.
"Mexican citizens will be afraid to visit Arizona for work or pleasure out of concern that they will be subject to unlawful police scrutiny and detention," the brief said.
It will be to a U.S. District Court judge to decide whether to accept the brief along with similar ones submitted by various U.S. organizations.
Governor Jan Brewer is mad and without providing specific examples argues that Mexico has expressed "false assertions and factual inaccuracies." Her main point seems to be that there will be no racial profiling so the Mexican government is lying.
This is an amicus curiae brief, so although the word "challenge" is being used, it is not a lawsuit. Instead, the Mexican government is just making sure that its side is legally heard, and ensuring it gets some press. That decision should be viewed primarily in terms of Mexican domestic politics. President Calderón can score a lot of points at home by standing up to the United States, and that is useful at time when the media is focused on the government's failures in the war against cartels. There will be a certain amount of backlash, as there was when he addressed the U.S. Congress last month. However, Calderón may figure there is not much more to lose--restrictionists can't really get any more mad.