Canadian prime ministers have never been afraid of standing up to the United States on some issues while obviously being a close partner on others. It was Pierre Trudeau who actually told the United States to remove its nuclear weapons from Canada, taking the first step towards the kind of measures that Ms. Mason is proposing.
In terms of positive consequences, Ms. Mason is absolutely right; we need to have a real, significant process towards nuclear disarmament worldwide, because the alternative is increased proliferation and eventually an accident or an escalation because a country feels existentially threatened by an opponent. For how many more generations will we live under the dark shadow of the threat of nuclear war? If we don't start now, we won't save our children from that risk in the future. So Ms. Mason is absolutely right. This is not the easiest time to do that. It will take real courage. But it's something the Canadian government could do to continue the progress that Pierre Trudeau started.