See his fact-based analysis over here.
Here’s an excerpt:
Aid gives the US administration too much leverage over Israeli policies and actions. US Democratic presidential candidates have demonstrated remarkable ignorance about the situation in our region, and a tendency to accept our enemies’ point of view, as demonstrated by their remarks at the recent J Street convention. Donald Trump has been supportive of Israel, but he will not be president forever, and a Democrat or even a different Republican could be quite the opposite.
Israel needs freedom of action to respond to threats. The aid comes with strings attached, such as rules that American weapons can’t be used in ways that violate human rights. During the Gaza War in 2014, Obama cut off the supply of Hellfire missiles and other items in response to (false) complaints that Israel had deliberately shelled a UN school. Israel is continually the target of similar accusations.
Aid distorts our military purchase decisions. If you can get your army boots – or fighter aircraft – “for free” then maybe you settle for something that doesn’t meet your needs quite as well as a product you have to pay for. The decisions about what we can spend our aid dollars on are based in part on US policy objectives and, since the aid is in effect a direct subsidy to the US defense industry, on domestic American considerations – not on what’s best for Israel.
For example, it has been suggested that manned fighter aircraft will be much less important in future warfare than drones and surface-to-surface missiles; but we get “free” fighter planes from America and build our own drones and missiles, so we have lots and lots of manned fighter planes – maybe more than we need.
The F-35, with its high cost and all its troubles, stands out as problematic. Would Israel even have considered replacing its F-16 fleet with F-35’s if the first batch weren’t “free”?
Aid corrupts our military decision-makers. The word ‘corrupts’ is a strong word, but may not be out of place. If you are in charge of the IDF and a quarter of your budget comes from America, wouldn’t you take the US administration’s wishes into account when considering whether or not to take some particular action? Israel came close to bombing Iran in 2012. One of the reasons it did not do so was opposition from security officials, including Chiefs of Staff Gabi Ashkenazi and Benny Gantz (who are now Netanyahu’s political opponents). It is reasonable to assume that their Pentagon counterparts let them know that disobedience could have unpleasant consequences.
Again, see the rest here.