But this email does take their side:

I read with interest your BOMB CANADA article today in the current issue of National Review — it is, frankly, a piece of American Imperialist trash.
But….why not bomb Canada? It seems the popular thing to do of late: bomb Afghanistan; bombing buses in Jerusalem; bombings in Bali and Kenya; going to bomb Iraq.
The article smacks of the Bush Administration’s doctrine of late: either you are with us or you are against us. Your style mimics nationalist mouthpiece Joseph Goebbels, except that you wouldn’t be welcomed in the inner circle of fellow fascists nor at several upper-crust, Republican-enclave, private “Eastern establishment” clubs.
When the TITANIC was sinking, Captain Smith rallied his crew to stay on board with the phrase, “Be British!” As the American Imperialist ship-of-state sails into the world scene, with Bush Jr. at the helm, the captain’s siren call is, “Be American!” Good for Canada in charting a different course.
What a sad piece of journalism, Mr. Goldberg — I shall use the magazine for kindling tonight.