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.
This artist rendering shows Supreme Court Justices (from left) Sonia Sotomayor, Stephen Breyer, Clarence Thomas, Antonin Scalia, John Roberts, Anthony Kennedy, Ruth Bader Ginsburg, Samuel Alito and Elena Kagan in 2012.
Election Day volunteer Vicki Groff places a sign to direct voters to a polling station at Kenilworth School in Phoenix in 2012.
Credit Jonathan Gibby / Getty Images
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.