For us and Israeli's, it's not 'borrowed' money, it is printed fiat. The difference in my mind, borrowed implies there will be payback. Given that it is printed out-of-thin-air fiat by central banksters, it will never be paid back. Not a plug nickel (see Grace Commission).
America has become the protector of allies when they are capable of defending themselves. Israel is actually does a very good job at their own defense. Europe, Japan, South Korea, the Philippines and others are capable of their own defense but neglect doing so because we pay the way. We should be the last resort to these nations, very much like with England in WW II.
This is not isolationism. It’s all about having more equal partners, particularly in peace time.