The State of Arizona has been sued by the Obama administration because the citizens of Arizona feel the need to safe guard their borders. Obama and others deny that Arizona has that right.
But what DOES our U. S. Constitution say? Take a look!
Article IV, Section 4 of the U.S. Constitution
“The United States shall guarantee to every State in this Union a Republican Form of Government, and shall protect each of them against invasion; and on Application of the Legislature, or of the Executive (when the Legislature cannot be convened) against domestic Violence.”