That requires one to assume that Schumer didn’t engage in the the thought process of considering the short term and long term impact of these moves. That they were simply reflexive actions on his part. I don’t believe there is any serious argument that engaging in such a process would result in saying “Yes, this action will help US interests!”. And whatever his faults, I don’t think Schumer is a profoundly stupid man.
I DO think that he calculated that each of these moves would be seen favorable by groups like AIPAC and others. So that moves us into a position where he is taking action based on garnering favor with a specific lobbying group…which in this case has a long history of pushing for hard line Israeli support. Now all politicians do such calculations in response to a wide range of special interests. But it leaves us with Schumer making this calculation…“This probably really isn’t a great idea of US foreign policy, but its going to be very good for my continued support from AIPAC, so I’ll do it”.
This of course can’t be proved, but it seems a very likely calculation that occurred. Which gets us closer to determining the “nature of a man’s heart”.