OTTAWA — The Supreme Court of Canada will be in the spotlight Friday as it deals with the latest in series of divisive issues that is rooted in B.C. social policy battles. Canada’s highest court is set to rule on whether the criminal prohibition against anyone who assists a suicide — vigorously defended by Prime Minister Stephen Harper’s Conservatives — violates the Charter of Rights and Freedoms. One of the issues being argued is whether Parliament, or appointed judges, should decide such complex issues. A handful of B.C. MPs surveyed on that question Wednesday were naturally split along party lines.