system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What's happening with Senator Mike Duffy in Canada? Will we have a new Prime Minister soon?
gpt
So Senators in Canada get expenses like travel and housing partially paid for. Duffy claimed some expenses that were ineligible, like a housing expense for a house he rarely used. An investigation was opened.

Duffy paid the ~$90,000 back, *but* Harper's Chief of Staff Nigel Wright, cut Duffy a cheque for the same amount (with the money probably coming from the Conservative Party itself) to cover Duffy's re-payment.

Now we have accusations and some contradictory evidence about who exactly knew about what was going on. We know that some people lied about not knowing about the cheque, and now Duffy's lawyer is claiming that the PMO approved all his expenses.