More on the Canadian intervention in the American election

Should the Senate Foreign Relations Committee ask the Canadian PM to come to DC and explain the Canadian governments intervention in an American election?

It sure appears that the multiple leaks out of the Canadian government were targeted to tank Barack Obama. The GOP in Washington would much prefer to run against Senator Clinton, and these leaks appear to be an effort by conservatives in Canada to help their ideological cousins in the US by hurting Obama at a critical point in the election.

Josh Marshall has new information showing definitively that the Canadian leaks were designed to hurt Obama. New news accounts show the Clinton camp had similar conversations with the Canadians as the Obama camp - but only the Obama conversations were leaked. What makes this particularly gauling is that Senator Clinton has been much more critical of NAFTA than the junior Senator from Illinois.

So, Senator Biden, what to make of all this?