Hopkins had a major voice in policy for the vast $ 50 billion Lend-Lease program , especially regarding supplies , first for Britain and then ( upon the German invasion ) the USSR . He went to Moscow in July 1941 to make personal contact with Joseph Stalin . Hopkins recommended , and the president accepted , the inclusion of the Soviets in Lend Lease . He then accompanied Churchill to the Atlantic Conference . Hopkins promoted an aggressive war against Germany and successfully urged Roosevelt to use the Navy to protect convoys headed for Great Britain before the U.S. entered the war in December 1941 . Roosevelt brought him along as advisor to his meetings with Churchill and Stalin at Cairo , Tehran , Casablanca in 1942-43 , and Yalta in 1945 . In mid-1943 , Hopkins faced a barrage of criticism from Republicans and the press that he had abused his position for personal profit . One congressman asserted that British media tycoon Lord Beaverbrook had given Hopkins ' wife Louise $ 500,000 worth of emeralds , which Louise denied . Newspapers ran stories detailing sumptuous dinners that Hopkins attended while making public calls for sacrifice . Hopkins briefly considered suing the '' Chicago Tribune '' for libel after a story that compared him to Grigory Rasputin , the famous courtier of Tsar Nicholas II of Russia , but was dissuaded by FDR
Yalta
Yalta Conference
Harry Hopkins