The Americans are relatively divided on that issue. They are much more amenable to that than Iraq, where the attitudes are much more negative.
These issues have been moving around in both Canada and the United States. It's important to recognize, for example--we forget this in the aftermath of history--that within a month before the Iraq war was engaged, the majority of Canadians supported going to Iraq. The vast majority of Canadians--about 75%--supported the Afghanistan mission from the outset. That devolved into about an equal number who supported and opposed it as time went on, and it has remained relatively stable. But in the fall we saw a significant shift, largely caused by a growing sense of fatigue and frustration that the objectives of the mission--which everybody agrees are good--may not be achieved. We have seen a fairly precipitous decline in support for the mission.
So it's difficult to disentangle the fact that Canadians would reject President Obama's appeal from the fact that we have seen a downward movement in Canada in support of the mission in the last few months.