Case revolves around firing of two scientists from Winnipeg’s National Microbiology Laboratory. Conservative Leader Erin O’Toole is seeking to intervene in a Federal Court case where the Liberal government is trying to shield documents related to the firing of two scientists from Canada’s highest-security laboratory. O’Toole’s lawyer has filed a letter with the court saying the leader of the official Opposition has a significant interest and distinct perspective on the underlying issues raised by the case. The Liberal government asked the court last month to affirm a prohibition on disclosure of records concerning the dismissal of Xiangguo Qiu and her husband, Keding Cheng, from Winnipeg’s National Microbiology Laboratory. Speaker Anthony Rota has filed a motion to strike the court action, saying the House of Commons has the power to request the “persons, papers and records” it deems necessary for its functions.