Actually I'd rather we just withdraw from NATO altogether. The "advantages" of having pledges from countries like Iceland to defend the U.S. in case of attack are pointless. And using NATO countries as staging bases to attack countries like Syria is an "advantage" we can/should do without as well as we shouldn't be doing that shit to begin with.
I wonder if NATO provides value to the US (and the world) for things other than protecting the US from a conventional warfare attack that no one ever thought would actually come, even when NATO was drafted.
Maybe the people who drafted NATO had something else in mind. Naaaahhhhhhh.