FILE - In this Oct. 19, 2010 file photo, Chief Justice John G. Roberts Jr. speaks at Canisius College in Buffalo, N.Y. Three years ago, the Supreme Court warned there could be constitut

 

              FILE - In this Oct. 19, 2010 file photo, Chief Justice John G. Roberts Jr. speaks at Canisius College in Buffalo, N.Y. Three years ago, the Supreme Court warned there could be constitut
FILE - In this Oct. 19, 2010 file photo, Chief Justice John G. Roberts Jr. speaks at Canisius College in Buffalo, N.Y. Three years ago, the Supreme Court warned there could be constitutional problems with a landmark civil rights law that has opened voting booths to millions of African-Americans. Now, opponents of a key part of the Voting Rights Act are asking the high court to finish off that provision. (AP Photo/Don Heupel, File)