U.S. President Barack Obama vetoes the National Defense Authorization Act (NDAA) for Fiscal Year 2016 in the Oval Office of the White House in Washington, D.C., on October 22, 2015. © 2015 Reuters

U.S. President Barack Obama vetoes the National Defense Authorization Act (NDAA) for Fiscal Year 2016 in the Oval Office of the White House in Washington, D.C., on October 22, 2015. © 2015 Reuters