Secretary of State John Kerry spoke with NPR's Steve Inskeep at the State Department. Kerry said if Congress or a future president reverses a nuclear control agreement with Iran, U.S. credibility will suffer. Kainaz Amaria/NPR hide caption

itoggle caption Kainaz Amaria/NPR

People wait in line to vote at the Board of Elections early voting site on Oct. 18, 2012, in Wilson, N.C. The U.S. Justice Department and several groups are suing North Carolina over the sweeping election overhaul it passed two years ago. Sara D. Davis/Getty Images hide caption

itoggle caption Sara D. Davis/Getty Images

U.S. Secretary of Defense Ash Carter shakes hands with Vietnam's General Secretary Nguyen Phu Trong at the Presidential Palace in Hanoi, Vietnam, on June 1. Trong will meet with President Obama in the White House on Tuesday. Luong Thai Linh/EPA/Landov hide caption

itoggle caption Luong Thai Linh/EPA/Landov

Cruz in his high school yearbook; he was president of the drama club. Second Baptist High School hide caption

itoggle caption Second Baptist High School

Marta Elsie Leveron, 19, (left) and her brother Freddy David Leveron, 18, have not seen their father since he left El Savador to work in California in 1999. A new U.S. program allows families to reunite if one parent is a legal U.S. resident. The girl in the middle is Liliana Beatriz Leveron, 16, a cousin of the other two. Her parents are in the U.S. and she's seeking to reunite with them as well. Carrie Kahn/NPR hide caption

itoggle caption Carrie Kahn/NPR

President Obama has proposed a rule requiring requiring overtime pay for more workers. The plan has drawn fire from many employers. Pablo Martinez Monsivais/AP hide caption

itoggle caption Pablo Martinez Monsivais/AP

Linda Boyle (left) and Lyn Coleman hold a photo of their children, who were kidnapped in Afghanistan in 2012. Caitlan Coleman, an American married to Canadian Joshua Boyle, was pregnant when the couple was abducted. Bill Gorman/AP hide caption

itoggle caption Bill Gorman/AP

The state flag of Mississippi is unfurled against the front of the Governor's Mansion in Jackson, Miss., on Tuesday. The flag has been the center of renewed controversy since last week's racially motivated shooting of nine parishioners at a black church in South Carolina. Rogelio V. Solis/AP hide caption

itoggle caption Rogelio V. Solis/AP

President Obama delivers remarks in the Rose Garden after the U.S. Supreme Court's 6-3 ruling to uphold the nationwide availability of tax subsidies that are crucial to the implementation of the Affordable Care Act. Gary Cameron/Reuters/Landov hide caption

itoggle caption Gary Cameron/Reuters/Landov

American Journalist James Foley, pictured in 2011. Foley's beheading at the hands of the Islamic State militant group has forced a debate over how the U.S. balances its policy of not paying ransoms. Steven Senne/AP hide caption

itoggle caption Steven Senne/AP

Supporters of the Affordable Care Act rally in front of the U.S. Supreme Court in Washington, D.C., on March 4. The Supreme Court is considering the case of King v. Burwell, which could determine the fate of health care subsidies for millions of people. Alex Wong/Getty Images hide caption

itoggle caption Alex Wong/Getty Images