 After the September 1939 invasion of Poland by Germany, Hoover opposed U.S. involvement in World War II, including the Lend-Lease policy.He rejected Roosevelt's offers to help coordinate relief in Europe, but, with the help of old friends from the CRB, helped establish the Commission for Polish Relief.After the beginning of the occupation of Belgium in 1940, Hoover provided aid for Belgian civilians, though this aid was described as unnecessary by German broadcasts.