One of those documents is an August 30 e-mail from Michael Duffey, associate director of national security programs for the Office of Management and Budget (OMB). In that e-mail, Brannen notes, Duffey told Pentagon Comptroller Elaine McCusker, “Clear direction from POTUS to continue to hold.” Duffey was referring to the hold that Trump had placed on military aid to Ukraine, which House Democrats say was offered by Trump on the condition that the Ukrainian government investigate former Vice President Joe Biden and his son, Hunter Biden.