bombers and crews in Britain to form No. 6 Group, one of eight bomber groups within RAF Bomber Command. If the planned German invasion of Britain had taken place in 1941, units of the formation later known as I Canadian Corps were already deployed between the English Channel and London to meet them. After France's surrender Britain told Canada that a German invasion of North America was not impossible, and that Canadians needed to plan accordingly. From June 1940 Canada viewed defending itself as important as aiding Britain, perhaps slightly more so. Canadian troops were sent to the defence of the colony of Newfoundland, on Canada's east coast, the closest point in North America to Germany. Fearing the loss of a land link to the British Isles, Canada was requested to also occupy Iceland, which it did from June 1940 to the spring of 1941, following the initial British invasion. Canada also produced military equipment using American methods and tooling. Cost was no longer an issue; on 24 June King's government presented the first $1 billion budget in Canadian history. It included $700 million in war expenses compared to $126 million in the 1939–1940 fiscal year; however, due to the war, the overall economy was the strongest in Canadian history. With opposition support, the National Resources Mobilization Act initiated nationwide conscription across Canada. Hoping to avoid the issue that sparked the 1917 crisis, drafted Canadians could not be sent to fight overseas unless they volunteered. Nonetheless, many remained adamantly opposed to any form of conscription; when Mayor of Montreal Camilien Houde spoke out against the draft in August 1940, he was arrested and sent to an internment camp. The United States government also feared the consequences to North America of a German victory in Europe. Because of the Monroe Doctrine the American military had long considered any foreign attack on Canada as the same as attacking the United States. American isolationists who criticized Roosevelt administration aid to Europe could not criticize helping Canada, which a survey of Americans in the summer of 1940 found that 81 per cent supported defending. The isolationist Chicago Tribune advocating a military alliance on 19 June surprised and pleased Canada. Through King, the United States asked the United Kingdom to disperse the Royal Navy around the Empire so that the Germans could not control it. On 16 August 1940, King met with Roosevelt at the