Royce, Obama is a Harvard educated lawyer (if I recall correctly) and has surrounded himself with academics.
The debate is literally over "extra-judicial killings" and Obama (or any other president before him) is unable to do anything without a shitload of legalese happening.
Almost all, if not all, of the drone-strikes under Obama's administration happen with direct presidential authorization and Obama made that happen (kind of like Kellhus telling his followers that all their Damnation is on him, "done in his name.") Except that it still doesn't make what Obama is doing legal when he executes American citizens living (and possible operating as terrorists) abroad - technically, "enemy combatants" aren't able to act on their international rights to surrender, but otherwise Obama is pretty much allowed to slaughter those who fit the criteria of the "enemy combatant" the academic term in vogue right now
so long as they aren't American citizens, otherwise people in America get understandably jumpy.
[EDIT: I should add here, that essentially, detractors of Obama's exercise of force is that Obama is judge, jury, and executioner. There are legal avenues that are to be followed for both international but in this argument,
definitely, for American Citizens. They are supposed to have rights that their government recognizes internationally - so those "operating as enemy combatants" should in fact be captured and brought to trial in the States.]
All academics and law is based on "defensible argument" and so far Obama has acted with impunity in his own country and in the international community.
Hense, the necessity - and if Sci is correct and they don't really argue anything, then the farce as well - of debate on the issue because the first execution by drone of an American citizen on American soil will either go uncontested or it will be the cause of rebellion.
And "defending Canada" against the States is a joke if American goes to shit

. Drones already patrol the Canadian-U.S. border forty-five minutes from where I live and can apparently capture images from that distance...
EDIT:
For notation, it's something like 88 countries who actively use drone technology for surveillance and 3 who arm them for combat.
To the enemies of America (myself included), America is already the terminator empire. We should link some of the horror stories from living "under the drones" because they are horrifying.