A complete ban would mean that people such as my next door neighbor's friend, the Shah of Iran's son, would be prevented from escaping from their oppressors (in theory). Likewise, the King of Afghanistan would be prevented from coming back here. NATO allies from Turkey would be prevented by that ban, as would be Iraqi's opposed to Saddam Hussein.
I couldn't support a complete ban.
Jordan's King Hussein and Afghanistan's new interim leader are both proving themselves to be civilized, contributing members of society, also. Mushariff of Pakistan seems to be playing ball, as well. Further, Bangladeshi's seem presently opposed to radical Islam.
The last time I checked, Salman Rushdie was a Muslim, too...