Mexico and 10 other countries from Latin America incuding Argentina, Brazil, Chile, Colombia, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua and Peru filed briefs in support of the Plaintiffs declaring HB87 unconstitutional.
Attorneys representing Mexico filed briefs challenging similar legislation in Arizona and Utah. The briefs argue that the immigration crackdown could jeopardize close ties between the U.S. and its Latin American neighbors.
Mexico argued that these measures would strain diplomatic relations between the U.S. and Mexico and the interests of the two countries and would encourage discrimination against its citizens in the U.S.
The Anti-Defamation League filed an amicus brief also in favor of Plaintiffs warning that the law could deter Latinos from reporting crimes and create an underclass vulnerable to increased hate crimes and violence. The American Immigration Lawyers Association also filed a brief in support of Plaintiffs claiming that the law forces police to make highly discretionary judgment calls about who to detain (and they are certainly not trained for that).
I am not sure what legal standing Mexico has but the other Plaintiffs in this case certainly can show imminent harm if the law is implemented, and we all hope judge Thrash issues the injunction and blocks the law. He does not have a lot of time to act as it goes into effect July 1.