In the OTL aftermath of WWII, the United States was ended up establishing some overseas military bases in foreign countries, e.g. Britain, Germany, Italy, Japan, and South Korea. The challenge is to make those military bases to be established and/or have been established in both Russia and China at the aftermath of ATL WWII. The PODs can be anytime after 1939.
And anyway...what would be the consequences? A much earlier US hyperpower?