How about Europe?
Everyone forgets how much military aid the US gives Europe. NATO dwarfs Israeli aid. Do we tell them what to do while we pay for their universal health care, 30 hour work week, and one month annual vacations? They have no militaries because we are covering their a**es.
If the strings on aid require Israel to go against its national interest which the last time caused the Intifadah and many dead and maimed Israelis, Israel can not go along come what may. Call the bluff.
Everything's changed since 9/11. Don't think that we will automatically defend Europe now.
So I agree - call the bluff. If Israel wants to stick a finger in our eye - let them reap the consequences.