FILE - In this July 7, 2016, file photo, then-National Security Adviser Susan Rice follows President Barack Obama across the South Lawn of the White House in Washington, to board Marine One. Rice, is declining an invitation to testify before a Senate Judiciary subcommittee investigating Russia's interference in the 2016 election. Rice's attorney sent a letter to South Carolina Sen. Lindsey Graham, informing the Republican that Rice would not appear before the subcommittee on May 8, 2017, with two other Obama administration officials. (AP Photo/Carolyn Kaster, File) Photo: Carolyn Kaster, STF / Copyright 2016 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistribu