I know this is an old thread, but since Nix tried it against me last week, worth revisiting…
The Alaska Insertion FAILED. Japan’s fleet, plus the pouring of units to Asia, was too much for the US to counter via Alaska. And that was with the benefit of a US IC in Sinkiang as well to further retrict Japan.
Of course, UK losing their shiny new IC in India on J1 was also a pretty serious blow… but not totally unexpected.