Economist Mark Carney replaced Justin Trudeau as the leader of the Liberal Party in Canada, and thereby became PM. He has an impressive resume' and held high level positions in the Canadian and British governments
He has called a "snap" election happening soon. Before the plagiarism accusations surfaced, Carney was favored to win the PM job in his own right.
Someone ran his doctoral dissertation against a plagiarism checker. They found 10 or more examples of Carney using others' words without making clear they were borrowed.
Joe Biden was famous for borrowing other pols' speeches to give as his own, so maybe the bar is lower for politicians. Or more likely, Carney cut corners.
Don't give his adviser's claim that the work is original too much credit. Not catching the plagiarism makes her look bad too.
See this long column in Canada's National Post for multiple examples of Carney playing fast and loose with citation of others' works. I'd expect to see this kind of shoddy citation in undergraduate work, not in a dissertation.