The witnesses are there because there are two principal questions that have to be answered. One is, there was a confidentiality agreement that was entered into between the government and Siemens-PCL/Dufferin. Were the specific details of that contract violated? That's an important question.
Secondly, we know that the minister obtained a copy of the contract on the understanding that it was to remain confidential and then leaked those contents and may well have misrepresented those contents, and that misrepresentation was to the benefit of a particular mayoralty candidate and had a major influence in the municipal election. That's a very serious thing, obviously, if true.
What we're trying to ascertain with this witness list is whether that indeed is what happened. If it did, then that constitutes, obviously, a very serious breach. That's why the individuals are listed here, including the Secretary of the Treasury Board. We want to ask and understand what the Treasury Board understood were the provisions of the confidentiality agreement they entered into. What were they obliged to uphold, having entered into that agreement with Siemens?