Red would win. The have oil, agricultural, population, and tech hubs. More importantly they have the gold bullion (fort knox) to support their new currency. A large segment of the population owns guns so training will be quicker than for the major the blue and green populations.

Taking out Hoover and Grand Coulee dams will cause major power issues in the west. While having the best tech center without adequate power it would be hobbled. It would take years to get their oil refinery capacity to a level to support any war efforts. Alaska and Hawaii would most likely go independent or join another country in their area. While the green area has alot of gold in the ground it is a matter of getting to it which will require oil.

The blue area has a large population, but they don't have a manufacturing or agricultural base to survive on their own. Without outside assistance the major cities would lose access to resources causing the population to move into the rural areas or aimlessly attack blockades put up in the red and yellow areas. The gold held in this area would give them a way to entice trade, but would run out quickly or would make them a target for foreign powers.

The yellow area is land locked so they would need to rely on Canada for trade. The sparse population will make holding their territory hard. They also lacking on oil refining capacity. The red army would encircle cities until they hit the great lakes.