Associated Press: In one four-hour stretch, the nation's political polarization was on stark display.
Just after 10 o'clock Tuesday morning, the Supreme Court struck down a key provision of the Voting Rights Act. Republicans in several Southern states moved to impose voter identification laws that had been delayed under the law -- and blamed by some for helping energize minority communities against the GOP. The court's decision devastated Democrats.
Hours later, President Barack Obama announced a series of executive...