A top White House national security adviser and key proponent of the Obama administration’s diplomacy with Iran is the focus of a congressional inquiry following disclosures the FBI may have denied him top-level security clearances, according to communications exclusively obtained by the Washington Free Beacon. Ben Rhodes, a White House deputy national security adviser who led the administration’s efforts to mislead Congress about the terms of the Iran nuclear agreement, is under scrutiny in the wake of disclosures he was declined interim clearance status by the FBI in 2008, when the administration was moving into the White House. Since that...