Canada's new ambassador in Washington said Thursday that trade talks need to move beyond "bluster" as public rhetoric on both sides of the border has heated up in recent weeks. "Every meeting that I've had has been respectful, open and receptive — and I have to say, I wasn't necessarily expecting that," Wiseman told MPs on the House of Commons foreign affairs committee. "I think at times we have to look below the bluster … and get down to business. And my sense, based on my reasonably large sample in the first couple of months, is that people in the United States are also wanting to get down to business." These were Wiseman's first public comments since officially taking up the ambassador role in February. They come as officials on both sides of the border have been taking shots at each other over the way they've tackled trade talks ahead of the mandatory Canada-U.S.-Mexico Agreement (CUSMA) review this year. U.S.…