Wait, I Thought the Law Violated Civil Rights and Was Racist

As has been expected for some time now, the Obama administration, rather than making any move to actually secure the border, have filed suit against Arizona over their new anti-immigration law. That's certainly no surprise. After all, the administration has consistently said that the law will violate the civil rights of legitimate citizens. Hell, it was so blatantly obvious that they didn't even need to read the bill to know that it would violate civil rights. And yet, the federal government has not taken that position before the court. The brief on behalf of the United States mentions the Supremacy Clause but not a word about violations of civil rights. You would think that if the Obama administration was worried about the usurpation of federal powers, they would have sues the "sanctuary cities" that openly defy federal immigration laws.