Trump cast the agreement as the United States-Mexico Free Trade Agreement, saying he wanted to do away with the NAFTA name because it had "bad connotations". "Progress between Mexico and the United States is a necessary requirement for any renewed NAFTA agreement".
So ... the full details of a U.S. -Mexico deal aren't known, there are time pressures that may be hard to meet, Canada has yet to be heard from, and it's not clear how connected to reality Trump's understanding of the deal is.
The White House is also expected to formally notify Congress by the end of this week of its intention to sign a new trade agreement within 90 days. The announcement of a U.S. -Mexico agreement lifted financial markets.
After the announcement, Pena Nieto thanked Trump for his political will and participation in the deal, but asked that Canada also be included in the agreement.
The deal with Mexico involves the automobile industry, but does not include other areas of contention, The New York Times reported.
Canada's Foreign Affairs Minister Chrystia Freeland is now overseas on a diplomatic trip to Germany, Ukraine and France.More news: Ronaldo fails to score in Juventus comfortable 2-0 win over Lazio
Senior administration officials also made clear on a call with reporters Monday afternoon that they were still pursuing a revised NAFTA trade agreement, though they maintained the possibility of a bilateral deal between the USA and Mexico if a trilateral deal with Canada can not be reached. President Donald Trump's fresh outburst at Canada on Monday will also make it hard to close the pact by the end of this week.
In a pointed Tweet, Trump announced that a finalized deal between the United States and Mexico is forthcoming. He said the USA, which wants Canada to loosen its protection of the supply-managed dairy industry, has not had "market access conversations with Canada of any substance".
One of the most fundamental parts of Trump's campaign for president was his promise to change America's deeply flawed trade arrangements.
Top American and Mexican officials concluded a marathon negotiating session in Washington Monday with an agreement on new content rules for the auto sector and several other bilateral matters that had proven major sticking points in the talks. They then would either agree to a new 16-year deal or the pact would expire.
The No. 2 Senate Republican, John Cornyn of Texas, hailed the "positive step" but said Canada needs to be party to a final deal. "We're going to call it the United States-Mexico trade agreement". He has frequently called it "the worst deal" ever made.
Pena Nieto said on Twitter he had spoken to Trudeau late on Sunday and urged Canada to return to the talks with the aim of concluding a three-nation accord "this week".