<sod >Â  The long-delayed Comprehensive and Economic Trade Agreement was bedeviled by yet another hold up early in the day when Canadian Prime Minister Justin Trudeau's plane had to return to Ottawa because of mechanical issues.< eod>< sod > Â  The long-delayed Comprehensive and Economic Trade Agreement , known as Ceta, was bedeviled by yet another hold up early in the day when Canadian Prime Minister Justin Trudeau's plane had to return to Ottawa because of mechanical issues.< eod>