Trump Administration Weighs Troop Cut in South Korea - WSJ
This, and the cut in Germany, is silly.
The cost sharing issue is negligible. This is a whole lot cheaper than the US having to pay full price to maintain a presence overseas.
The opportunity to serve (& travel!) abroad is a huge draw for the military. Not to mention our ability to keep ties between armies at a constant level of readiness.
Then, of course, there’s the logistical pre-staging of manpower and equipment for rapid deployment to hot spots.