Scott Brison says decision to leave politics not related to Mark Norman breach of trust case

Nova Scotia MP Scott Brison insists his decision not to run for re-election has nothing to do with his proximity to the story of Vice-Admiral Mark Norman, who faces charges of breach of trust related to allegations he leaked cabinet secrets to promote a navy shipbuilding contract.

The defence alleges that in 2015, Brison pressured the new Trudeau government to suspend a 700-million-dollar plan to build a new supply ship, which the Crown says prompted Norman to leak secrets to Quebec's Davie Shipbuilding so it could pressure the Liberals into restarting the project.

Norman's lawyers are hoping to make Brison a star witness when the case goes to trial late this summer.

Brison has denied the allegations, telling the House of Commons he simply did his job as Treasury Board president to ensure taxpayers were getting good value for the ship contract.

He says he wants to spend more time with his family, and is ready for a change after 22 years of public service.