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Details on the deal remained sparse, but USA administration officials say it provides increased access to Canada's dairy market for US producers and limits the American impact of Canada's controversial supply management system for dairy and poultry products.
But the agreement does not have any bearing on Trump's tariffs on steel and aluminum that have touched off battles with U.S. trading partners, including Canada and Mexico.
The US appears to be willing to give up demands to drop independent dispute resolution panels if it can have greater access to the Canadian dairy market.
Federal cabinet ministers were summoned to a late September 30 meeting at the Prime Minister's Office near Parliament Hill, while the White House convened its own late-night trade briefing conference call just an hour before the midnight deadline.
Trudeau said he knows there is anxiety for dairy producers but also implied things could have been a lot worse.
"Many Canadians were anxious we wouldn't get a deal, but today, numerous same Canadians are anxious about what we have given up to get this deal".
But trade news looked unlikely to affect people's votes, said Pierre Martin, a political scientist at the University of Montreal.
The two countries are still discussing lifting those tariffs, but a senior White House official said Sunday that process is on a "completely separate track".
"We want to (have a trade) deal (with India)".
"India, which is the tariff king, they called us and they said, "we want to start negotiations immediately"," Trump said.
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Protesters have targeted Collins, a Republican, because she is an undecided vote in a closely divided Senate. The president has supported repealing the ACA and has signed executive orders created to undermine the ACA.
A delay would mean current Mexican President Enrique Pena Nieto wouldn't be able to sign the deal before he leaves office, placing the fate of the pact in the hands of his successor, Andres Manuel Lopez Obrador.
"This is a situation where President Trump took away some of the concessions that were granted under the original NAFTA", she said. It will then need to be ratified by congress.
The AFL-CIO, a Washington-based federation representing millions of unionized employees, said it was too early to "make a final judgment" on the new deal's impact on working people. "NAFTA is a proven success".
Chesbrough also does not expect Mexico to lose many auto jobs, in part because of myriad trade agreements the country has with other nations besides the United States.
"These measures will support many - hundreds of thousands - American jobs", he said at a news conference at the White House.
The sale of B.C. -only wine on the shelves in groceries stores was approved three years ago, as part of an overhaul of the province's liquor laws.
There's also a new rule that a significant percentage of the work done on the vehicle must be completed by workers earning at least $16 an hour, or about three times what the typical Mexican autoworker now makes.
The United States "finally came to their senses" and created an environment conducive to reaching an agreement with Canada, said Jerry Dias, head of the major Canadian union Unifor, a key player in the negotiation drama.
Trump has approved the deal with Canada, a source familiar with the decision said.
But relations between Ottawa and Washington soured.
Farmers in the United States would also gain greater access to Canada's dairy market through the deal.
The deal did give an immediate boost to the Canadian economy after months of uncertainty, with the Canadian dollar rising to its highest level since early this year.