LordKalvert
Banned
Roosevelt had authority to direct the US Armed Forces to attack German & Italian forces based on the orders which were given during 1941 during the Undeclared War in the Atlantic. FDR could give orders to directly attack Formosa or, more likely, to attack Japanese vessels that are within a 'Neutrality Zone' around the Philippines.
EDIT:
I don't think that you understand what US Presidential authority was in the early 1900s. You should read up on President Wilson's interventions in the 1910s as well as other interventions in the 1920s & 1930s.
I think you might want to familiarize American law concerning armed intervention particularly outside the Western Hemisphere. A very important part of Roosevelt's attacks on subs is that the sub had to be west of 25 degrees of longitude
If Roosevelt had had the authority you are asserting, don't you think he would have been bombing Germany like years earlier?