Women (Nasty or otherwise) are going to be the reason that Donald Trump is NEVER President!
My understanding is that this deal was made back in 2010 as part of the Foreign aid package. I think we need to put this in perspective here. The US sending 20 (It's actually 24 if the Wikileaks cables were accurate), is a relatively small number when you take into account the fact that Egypt already have 240 F-16 Fighting Falcon fighters.
The Egyptian Air Force is the 4th largest operator of F-16s in the world, after the United States, Israel, and Turkey. An extra 20 F-16s is not going to make a whole lot of difference. Now Morsi can talk as much nonsense as he likes regarding Israel. Reality is, even if there was any hostile activity directed towards Israel, they won't get very far and would be annihilated. Israel already has some of the most sophisticated weaponry in the world, including nuclear weapons at it's disposal and will be quickly supported by the U.S and her other allies.