Why do you think the US is going to remain in NATO for the next 4 years? Trump loves to say the quiet part out loud and he’s been repeatedly threatening to pull out.
However, that is an "if" statement that has not come to pass.
^which by-the-by is difficult to achieve on a practical level. Notifications of withdrawal have to be handed in to the US government
But they are asking for that; I think you should consider why.