New Jersey Gov. Chris Christie leaves the Fort Lee, N.J., City Hall on Jan. 9. Louis Lanzano/AP hide caption

itoggle caption Louis Lanzano/AP

President Obama, working at his desk Monday night on the eve of his 2014 State of the Union address. Jacquelyn Martin/AP hide caption

itoggle caption Jacquelyn Martin/AP

Before the voter ID law was put on hold, this Penndot Drivers License Center in Butler, Pa., displayed signs promoting the requirement for voters to show an acceptable photo ID at the polls. Keith Srakocic/AP hide caption

itoggle caption Keith Srakocic/AP