Let's suppose that the US kept North Borneo in 1865 turned it into a mostly white US territory (68% White, 23% Asian, 8% Malay, 1% Black) and put on the road to statehood (probably getting that status later along with Hawaii and Alaska).
Considering the increased number of troops, more whites being the population, more land to be conquered from the Americans, and the fact that there would likely be a considerable amount of ethnic Japanese people in that 23%, how would the Pacific theater be altered by an American north Borneo assuming that the US still has all of its other OTL territories?