Special Presidential Envoy for Hostage Affairs
The special presidential envoy for hostage affairs, or more formally the Office of the Special Presidential Envoy for Hostage Affairs, was established in 2015, by an executive order pertaining to the recovery of U.S. hostages held by non-state actors and of U.S. citizens wrongfully detained by foreign states. The Special Presidential Envoy leads and coordinates activities across the Executive Branch to bring home those Americans.
Source: Wikipedia — Special Presidential Envoy for Hostage Affairs (CC BY-SA 4.0)