Prime Minister Justin Trudeau made a highly anticipated appearance Friday at a public inquiry into the federal government’s unprecedented use of emergency powers. • Trudeau defended his government’s decision to invoke the Emergencies Act last February to end the weeks-long convoy protests that had shut down Ottawa. • It was the first time the law was invoked in its 34-year history. • The act granted authorities new powers to freeze the bank accounts of those linked to the blockades, ban travel t