New Guinea - US mobilization

[Marcinos1985]

Hello,
in one of my games (gameid = 351962) I attacked New Guinea with UK (don't hate me). Surprisingly, US mobilization went up, from 95% to 99%. That's probably opposite, what should happen?

[BillRunacre]

Because US mobilization had gone above 90% it is on a path to entering the war so it is likely that the negative from the outrageous British move was counterbalanced by the move towards 100% mobilization.

It may have stopped them entering the war that turn though.

[Marcinos1985]

This indeed might be the case, thank you for explanation.