We live in this world too. Dealing with the entire world is part of existing in it. Especially when we have allies who need our help and support.
If we didn't involve ourselves in the affairs of the world, things would be considerably worse. Israel will not put up with the crap that much of the world wishes to heap on them. They will not hesitate to fire atomic artillery shells if they are ever invaded by an army that they cannot defeat conventionally. They will not hesitate to nuke population centers on a large scale if anyone ever uses nuclear weapons against them. If not for the US protecting Israel, much of the world could be a charred cinder right now.
What if we didn't protect our oil-producing allies in the Middle East? Imagine having to pay $25 a gallon for gas because some dictator overran all the oil regions and no one did anything to stop him.
How is recognizing the capital that Israel has chosen for themselves interfering with anything? It would seem to me like the people who are trying to interfere are the people who are demanding that Israel not be allowed to chose their own capital.
If someone was demanding that Canada move their capital to some other place against their will, and the US as Canada's friend expressed our support for Canada being able to choose their own capital city, would that too be none of our business?
It seems to me like supporting our friends is within the bounds of what is our business.