OTTAWA—In a bid to defuse a weekslong controversy, Canadian Key Minister Justin Trudeau claimed Thursday he initially challenged authorities officers when they advisable awarding a worthwhile authorities agreement to a charity with fiscal ties to his loved ones.

Through rare testimony by a sitting down key minister at a parliamentary listening to, Mr. Trudeau claimed he initially balked when officers advisable in early Might that WE Charity need to deal with a scholar-grant system budgeted at 900 million Canadian pounds ($670 million). Beneath…