U.S. Needs Canada's Approval to Shoot Down Incoming Missiles?

That's what Canada's Prime Minister has recently decided (reg. req'd.) in an attempt to assuage the Canadian Nationalists. His pronouncement led to this sarcastic quip by Stockwell Day, opposition foreign affairs critic:

Stockwell Day, the Conservative Party's foreign affairs critic, laughed off Martin's demand that Washington would have to alert Ottawa before taking out an incoming missile.

"These missiles are coming in at 4 kilometers ( 2.5 miles) a second, and if the president calls the 1-800 line and gets: `Press 1 if you want English, press 2 if you want French, press 0 if nobody's there ...' I mean, it's crazy."

How silly is silly? Oh well. Appearances are important.
Thanks to JC for the pointer.