OTTAWA — A TC Energy executive and former senior B.C. NDP political staffer has resigned after a video surfaced of him appearing to discuss covert efforts the energy giant allegedly uses to push Canadian governments toward approving liquified natural gas projects .

Planting company staff in events to ask politicians public questions, ghostwriting briefing notes for bureaucrats to give to cabinet ministers, and even an encounter with a top government official in a supermarket produce section are just some of the influence tactics shared by TC Energy’s former B.C. director of operations Liam Iliffe in the internal company presentation in March. Iliffe had previously been a chief of staff in NDP premier John Horgan’s NDP government.