OTTAWA—The Supreme Court of Canada will not hear Sen. Mike Duffy’s challenge of a ruling that prevents him from suing the Senate for suspending him. The decision could be a fatal blow to Duffy’s efforts to wrest $7.8 million in damages from the Senate, RCMP and federal government. Duffy filed a lawsuit following a high-profile investigation of…

OTTAWA—The Supreme Court of Canada will not hear Sen. Mike Duffy’s challenge of a ruling that prevents him from suing the Senate for suspending him. The decision could be a fatal blow to Duffy’s efforts to wrest $7.8 million in damages from the Senate, RCMP and federal government. Duffy filed a lawsuit following a high-profile investigation of…

OTTAWA—The Senate is urging the country’s top court to dismiss Sen. Mike Duffy’s challenge of a ruling that prevents him from suing the upper chamber for suspending him. In a submission to the Supreme Court of Canada, lawyers for the Senate say the legislative body’s actions are protected by the time-honoured bounds of parliamentary privilege….