'DON'T MESS WITH US!': O’Leary makes BIG prediction after Trump's latest threat of tariffs

O'Leary Ventures Chairman Kevin O'Leary joins 'America's Newsroom' to analyze President Donald Trump's threat of tariffs on Canada and explain why he believes the two nations must merge their economies to counter China. #foxnews #americasnewsroom #kevinoleary #oleary #mrwonderful #donaldtrump #trump #canada #tariffs #china #economicunion #51ststate #nationalsecurity #geopolitics #breakingnews #tradewar