President Trump on Friday floated the idea of ending all tariffs and trade barriers between the U.S. and its G-7 allies — an unexpected pitch that comes amid a tit-for-tat trade war Trump recently launched. Trump floated the idea — which was received as somewhat rhetorical — as the meeting was breaking up and was quickly challenged by Canadian Prime Minister Justin Trudeau, who asked, “What about subsidies?” After an angry tirade on Twitter on Thursday night, in which he lashed out at Trudeau, the summit host, and French President Emmanuel Macron, Trump used the afternoon session to run through his litany of complaints, citing specific trade deficits between the U.S. and allies in certain sectors.