Ethics Watchdog Bites Canada’s Former Envoy to U.S. Over Corporate Meetings With Ministers

David MacNaughton, Canadian Ambassador to the United States, speaks to reporters at a Liberal cabinet retreat in Calgary on Jan. 22, 2017. Jeff McIntosh/The Canadian Press

OTTAWA—Canada’s former ambassador to the United States has been cited by the federal ethics watchdog for improper lobbying after he left office, and barred from contact with senior ministers and political officials.

David MacNaughton was Prime Minister Justin Trudeau’s point man in Washington for 3 1/2 years before he left one year ago.