Shani Shakrabarti, director of Liberty is firmly against the Prime Minister's idea - but not for the reason you might expect.
She is not, as is popularly perceived - defending the rights of Jihadists while ignoring their threat and hostilty.
Quite the opposite - in her view, if someone has gone abroad to fight in this war, then they should be prosecuted on their return, and punished within the law, not simply asked 'if it's OK with you' if the Jihadist will consent to being monitored - with attendent costs and resources from the public purse.
Refusing readmission renders the Jihadists stateless, which sounds perfect for Dave's simplistic notion that if they can't come home, we don't have to worry about them.
First of all, are our European neighbours and allies going to be happy that our toxi waste citizens are living in their countries because they can't return here? Does Dave imagine that their violent misguided attitudes to western democracies will be temporarily switched off for the duration of their exile?
And here is something else Ms Sharbarti has considered, which appears to have escaped Dave's zealous desire to exclude citizens - what happens if other countries do the same? That will mean we have their Jihadists living here with no country to go home to. Will they be busy finding secure employment and paying taxes, or will they be looking to hook up with like-minded terrorists to cause a little mischief whule they visit our fair shores?
Yet again, Dave has a plan which sounds fabulous, but falls apart under even the most curosry examination - so no change there.