Bad comparison. Mexico is an independent nation recognized by the UN. No nation disputes it’s sovereignty over it’s lands.
Palestine is dependent on Israel. Israel controls the flow of people and goods from it’s borders. Israel controls electrical power to Palestine. Israel geographically surrounds Palestine.
One actor holds all the cards here. One actor has the power to improve conditions in Gaza (people don’t generally choose to support violent militants for no reason) and chooses to bomb it.