Ballots are stacked and ready as voters wait in line during the 2012 primaries in Milwaukee. An appeals court ruled Monday that a Wisconsin voter ID law, on hold since 2011, could go into effect, but the Supreme Court stepped in on Thursday night to halt the law again as it decides whether to take the case. Jeffrey Phelps/The Associated Press hide caption

itoggle caption Jeffrey Phelps/The Associated Press

Despite a Supreme Court ruling that gutted a key part of the Voting Rights Act, Attorney General Eric Holder wants a court to use another section of the 1965 law to require Texas to get the federal government's approval before changing its voting laws. Matt Rourke/AP hide caption

itoggle caption Matt Rourke/AP

Emily Goldberg holds up a sign during the NAACP voter ID rally opposing Pennsylvania's voter ID law last Thursday in Philadelphia. With her is her 2-year-old daughter, Willa. Michael Perez/AP hide caption

itoggle caption Michael Perez/AP

NAACP President Benjamin Jealous hopes that international pressure might be another weapon against strict new voter ID laws. Here Jealous speaks on Jan. 16 at the South Carolina State House in Columbia, S.C., for Martin Luther King Day. Rainier Ehrhardt/Reuters /Landov hide caption

itoggle caption Rainier Ehrhardt/Reuters /Landov