The speaker of Canada's parliament resigned on Tuesday, days after he singled out a Ukrainian veteran who apparently fought for the Nazis during World War II for a standing ovation during a visit by Ukraine's leader. "It is with a heavy heart that I rise to inform members of my resignation as Speaker of the House of Commons," Anthony Rota told lawmakers from the parliamentary floor, expressing his "profound regret for my error." "I accept full responsibility for my actions," Rota continued, saying his resignation would be effective by the end of Wednesday. Hunka's parliamentary recognition "caused pain to individuals...