Update at 10:30 a.m. ET. Today's Major Ruling; Key Part Of 1965 Voting Rights Act Is Ruled Unconstitutional:
"By a 5-to-4 decision, the Supreme Court has struck down a key provision of the 1965 Voting Rights Act that establishes a formula to identify states that may require extra scrutiny by Justice Department," Eyder writes.
Advocates of tougher voter registration standards have racked up wins in recent years — voter ID laws have taken hold across the nation, for example.
But those who believe that government should make voting as easy as possible just gained a significant victory with the U.S. Supreme Court's decision slapping down an Arizona law that required potential voters to prove their citizenship.