Any food item containing a prize that isn't edible is banned in America since some idiot kids choked on the awesome Hercules toys that used to come in Wonder Balls.
Wait, after laughing with everyone else in this thread, I've suddenly stopped to think.
Who the hell considers a Christmas Cracker to be a food item!? I mean... are they taking the 'cracker' bit as literally as I did in my first post? Because, dude, just... wow.