This is a voir dire ruling on the admissibility of expert opinion evidence from forensic accountant Mark Grenon regarding Senator Duffy's travel claims, financial practices, Senate contract funds, and a payment to the Receiver General.
The Crown sought to adduce comprehensive forensic accounting evidence analyzing Senator Duffy's expense claims submitted to the Senate, his personal financial situation, Senate funds procured and distributed through third parties, and a specific payment.
The defence objected to most of the evidence as overreaching, unnecessary, and prejudicial.
The court applied the two-step Mohan/Abbey framework for admissibility of expert evidence and admitted substantially all of the Crown's proposed evidence, with limited restrictions on the scope of certain areas.