We keep hearing this but no one can tell us what this leverage is. Still giving the US government more power than it has.
US is the chief importer of arms to Israel, the majority of, if not all of, the planes and weapons they are using against Palestineans are US made. We have been integral to them building their defense industry. Israel is also one of the biggest recipients of US aid.
We also cover for them in intergovernmental organizations such as the United Nations (where a lot of countries in the Global South are against them for the atrocities they are committing against Palestinians).
One of the main reasons Iran is hesitant to go to war is Israel is because they know the US will join in support of Israel.
We are their main backers on the global stage.