The Globe and Mail reports in its Friday edition that as the Carney government tries to sort out Canada's relationship with the Trump administration, almost nothing has been disclosed about the scope, content, timing or ultimate objectives of these talks, even though their outcome will be hugely significant for Canada. Guest columnist Lawrence Herman writes that what we got from Dominic LeBlanc, the minister responsible for Canada-U.S. relations, as he left Washington last week was vague diplomat-speak about understanding American concerns. American concerns have been made abundantly clear by Donald Trump himself, leading to the conclusion that we will never be returning to the comprehensive free-trade notions embodied in the U.S.-Mexico-Canada Agreement (USMCA). A more realistic view is that the USMCA's days are numbered and Canada needs to be looking at a post-USMCA world. Let us be clear: The U.S. does not want anything from Canada -- including autos and oil -- and it is unlikely Mr. Trump will TACO-out on steel and aluminum. We even have the prospect of upending trade in pharmaceuticals and copper. All of this makes it unlikely that the USMCA will survive as anything resembling the free-trade agreement we have now.