It's certainly yet another example of federal overreach under the Obama administration. Imagine if Bush had done this.
Don't use Bush for an example. His justice department circumvented state sovereignty by sending in his thugs to arrest medical pot smokers despite the state legalizing it. Right or wrong, the state made a decision that only affected folks within their borders and Bush poked his nose into it. Wrong is wrong no matter what party you belong to. He should have been the example, but he let us all down.
After the 1990 census determined that North Carolina was 22 percent black, the state's redistricting created a black-majority congressional district. President George H.W. Bush's Justice Department deemed this insufficient under the 1965 Voting Rights Act. Hence the creation of North Carolina's 12th District, which slithers 160 miles down Interstate 85.
(Wills, George; 15 March 2009)