9. The President can sign or veto legislation, and he is the leader on foreign policy
However, my main point is not to pin this on the president, but to point out the influence of the Israel lobby on our national policy and our politics.
A politician who advocates tying military or financial aid to Israel's policies -- regardless of how much they act against our own stated policies and even against our own national interests -- will be targeted for defeat and smeared as an anti-semite and/or a terrorist sympathizer. Anything but 100% unconditional support for Israel is pretty close to political suicide, especially for presidential candidates.
Don't get me wrong -- I support Israel's right to exist as a Jewish state and US aid up to a point -- but they will never be party to any peace plan that empowers Palestinians and we will never be an honest broker for peace in that conflict as long as our aid to Israel is not tied to actions by them on the ground that are necessary for an equitable peace.
We have to fix our democracy, or nothing else will be fixed.