You cannot agree that the expansion of NATO is good and then also claim you're for less military spending.
If that's your stance, then you're even more clueless than we already know.
That's never how it works. They'll be up on Capital Hill in minutes talking about how the mission has expanded, how their obligations have expanded, how there's no way the U.S. military could be expected to meet the demands of (insert 1 of 1000's of scenarios here) without more funding. This is particularly the case since this clown car administration is making no push for the other members of NATO to meet their expenditure promises. It will be up the U.S. (as always) to pick up the slack.
Goodness