With all the controversy surrounding the alleged U.S. pressure on Israel to abandon Gaza and support elections among the Palestinians, I think it is safe to say that Israel would eliminate every penny of this U.S. aid if it could possibly do so.
Israel's economy lost many times the value of American aid during the last several years of the Arab assault.
Contrary to what your type believe, American pressure on Israel has little to nothing to do with financial aid. It is much more insidious. It has to do with the catastrophic results to Israel if American political protection was removed from potential International sanctions.