At this North American Leaders' Summit, however, the threat of an "America First" approach to energizing the electric-vehicle industry has abated, unlike the worsening migration crisis Biden faces at the U.S.-Mexico border.That likely means Trudeau will need to raise his voice a little to get Biden's attention on matters of specific concern to Canada, said Scotty Greenwood, chief executive of the Canadian American Business Council."The rhetoric is good, but the actual progress — the actual commitment to demonstrated policies that accelerate the development of critical minerals — Canada has to do much more and much more quickly in order to make an impression in the U.S." Gary Doer, the former Manitoba premier who served as Canada's ambassador to the U.S. from 2009 to 2016, said he expects the issue of resilient, reliable supply chains more broadly will be a dominant theme of the summit.Biden, who is travelling south this weekend to visit the Mexico-U.S. border in advance of the summit, will hold a similar one-on-one meeting with López Obrador on Monday, Kirby said.It follows a fresh crackdown on illegal migrants from Cuba, Haiti and Nicaragua, on top of existing restrictions against Venezuelan migrants, that aims to forestall the impact of a possible Supreme Court decision to end Title 42, a Trump-era public-health measure that allows the U.S. to turn away asylum-seekers."