Madam Speaker, quite simply, it is because the Treasury Board Secretariat's policy on government security would require the leader to sign a certificate or an undertaking to not reveal any information to anyone else under threat of criminal prosecution. This is a security clearance process that the Prime Minister himself has not gone through.
That is why the leader of the official opposition has said that the Prime Minister needs to release the information of parliamentarians compromised by foreign interference. It is so the House can make a decision about those members and whether they can continue to sit in the House. It is so Canadians can go to the ballot box in the next election and be informed about the choices they are going to make, particularly when it comes to members of the House who colluded with foreign powers, to the detriment of the interests of this country and in violation of their oath.