Federal Conflict of Interest and Ethics Commissioner Mario Dion is investigating Prime Minister Justin Trudeau over the Liberal government's decision to task WE Charity with administering a $900-million student grant program. On Friday, WE Charity stepped back from the contract, which had faced criticism because of the Trudeau family's close association with the charity.

Today, CBC parliamentary reporter Catherine Cullen on the now-cancelled partnership, the surrounding controversy and why the ethics commissioner got involved.