Or will he just sell them as his dad buys more so that he can make it appear they as though they were unrelated transactions? As long as his dad has shares how can he pretend he doesn't have a vested interest? Not to mention any of his McCain inlaws. 

The other alternative is that he could just have a bunch of DSUs which are not technically shares but become shares a later date when he is out of office. 

The problem is this entire scenario has an abundant amount of options where he could still benefit from the Company. Even a blind trust doesn't do much when you have non-diversified assets. Say you had 1 million shares in Morneau-Sheppel in a blind trust-- most likely the person running the trust wouldn't sell any or all of them if the company was doing well.