Why It's Really Stephen Harper On Trial, Not Mike Duffy

This trial is going to be a long, drawn-out examination of the prime minister's role and vast influence. Harper will take blows from both sides. The Crown has already said it believes Duffy wasn't qualified to sit in the Senate -- that the former CTV journalist and longtime Ottawa resident didn't meet the basic residency requirement to represent his native Prince Edward Island and that he should never have been appointed to the upper house. So why did Harper appoint Duffy?