I seriously doubt FDR ordered Hitler to invade the Soviet Union in order to have the Soviets do "90% of the fighting".
Each of your silly pronouncements surpasses the previous. You get a certain credit for constancy, I suppose.
In spite of Stalin's demands that we invade Europe as early as 1942, FDR held back on the invasion of France until June 1944. Every month that FDR held off invading cost Stalin tens of thousands of deaths and saved us thousands of deaths
"In late May 1942 the Soviet Union and the United States made a joint announcement that a "... full understanding was reached with regard to the urgent tasks of creating a second front in Europe in 1942." However, Churchill persuaded Roosevelt to postpone the promised invasion as, even with American help, the Allies did not have adequate forces for such a strike.
"Instead of an immediate return to France, the Western Allies staged offensives in the Mediterranean Theater of Operations, where British troops were already stationed. By mid-1943, the campaign in North Africa had been won. The Allies then launched the invasion of Sicily in July 1943, and later invaded Italy in September 1943. By then, Soviet forces were on the offensive and had won a major victory at the Battle of Stalingrad. The decision to undertake a cross-channel invasion within the next year was taken at the Trident Conference in Washington in May 1943. Initial planning was constrained by the number of available landing craft, most of which were already committed in the Mediterranean and Pacific. At the Tehran Conference in November 1943, Roosevelt and Churchill promised Stalin that they would open the long-delayed second front in May 1944."
- Wikipedia.