oops.. hit send by mistake...

As for the flight, you are also correct when you say that when their flight left the U.S., the travel ban was over.   What you are missing though is the fact that members of the Bin Laden family were flown to various assembly flights in the U.S - WHILE the travel ban was on.

It should also be noted that many of the people who left the U.S. were students, and that many (if not all) of them had disowned Osama many years previous.

This whole affair poses many questions - why were they allowed to fly in the U.S., how in-depth was their interogation, and why the secrecy?