Treasury Assistant Secretary for Terrorist Financing, Marshall Billingslea, left, meets with Lebanese Prime Minister Saad Hariri, in Beirut, Lebanon, Monday, Sept. 23, 2019. Billingslea met Monday with the prime minister, parliament speaker and the central bank governor. The central bank governor said Billingslea is here to explain the motives behind recent U.S. sanctions targeting Lebanon's Iranian-backed Hezbollah group. (AP Photo/Hussein Malla)
US Treasury Assistant Secretary for Terrorist Financing, Marshall Billingslea, left, meets with Lebanese Prime Minister Saad Hariri, in Beirut, Lebanon. AP

Senior US official says Hezbollah sanctions could hit benefactors