Former Deputy Attorney General James B. Comey waits to testify before the Senate Judiciary Committee in Washington on May 15, 2007. NPR has learned that Comey is in line to become President Obama's choice as the next FBI director. Susan Walsh/AP hide caption

itoggle caption Susan Walsh/AP

President Obama is expected to nominate James Comey, seen in 2004, to be the next director of the FBI. Mark Wilson/Getty Images hide caption

itoggle caption Mark Wilson/Getty Images

Former Deputy Attorney General James B. Comey waits to testify before the Senate Judiciary Committee in Washington on May 15, 2007. NPR has learned that Comey is in line to become President Obama's choice as the next FBI director. Susan Walsh/AP hide caption

itoggle caption Susan Walsh/AP