Speaking of compensation - In 1942 21,000 Japanese Canadians (14,00 born in Canada) were interned for no good reason, their property sold, families separated.
A precedent was then set in 1988 for the Japanese Canadians "compensation".  The Japanese Canadians received an apology and $21,000 in compensation, which should be good enough for Mr. Khadr, considering that not one of the interned Japanese Canadians took anyone else's life.