September 2, 1940, President Franklin D. Roosevelt signed the Destroyers for Bases Agreement. Under the terms of the Agreement, the United States gave the British 50 obsolete destroyers in exchange for 99-year leases to territory in Newfoundland and the Caribbean. The territories would be used as United States air and naval bases. Substantial legal obstacles complicated the deal. Attorney General Robert H. Jackson and his colleagues spent much of the summer of 1940 trying to resolve some of these issues. Jackson's Acquisition of Naval and Air Bases in Exchange for Over-Age Destroyers was presented on August 27, 1940.