"Unfortunately, to date, the things that he's done to hurt workers outpace what he's done to help workers. Congress should not interfere w/ these negotiations or I will simply terminate NAFTA entirely & we will be far better off".
After intense negotiations last week, US and Canadian trade teams failed to strike a deal before Mr. Trump's Friday deadline.
He added: "We said when [Trump] was elected that when he did something good for workers, we'd support him".
Under NAFTA's withdrawal rules, Trump must give six months' notice to the leaders of Canada and Mexico, the other stakeholders in the current pact, to pull out the U.S. He also must seek the support of Congress to pass such a change.
"We were far better off before NAFTA - should never have been signed".
Trump told Bloomberg Thursday that he would not make any compromises in the talks with Canada - but that he could not say that publicly because "it's going to be so insulting they're not going to be able to make a deal", the Toronto Star reported. The U.S. has tremendous upside potential as we go about fixing some of the worst Trade Deals ever made by any country in the world.
Also nettlesome is a provision in the U.S. -Mexico deal that shields U.S. makers of biologics - ultra-expensive drugs produced in living cells - from generic competition for 10 years instead of the eight Canada is willing to live with: The Canadians fear the protection will drive up drug prices and make their government health care system more costly.
Donald Trump said there is "no political necessity" to keep Canada in the NAFTA agreement if a "fair deal" can not be reached.
Outgoing Mexican President Enrique Pena Nieto wanted to sign a deal before he left office December 1.
For Canada, losing access to the US market would be a severe economic blow.
On Monday, Trump touted the economy, saying 'Our country is doing better than ever before with unemployment setting record lows.' He added, 'The Worker in America is doing better than ever before. Ottawa does have other complaints.
Congress members from both parties as well as USA business leaders also want Canada included to preserve the more than $1 trillion in trade under the 24-year-old trilateral deal.
He then balked at lawmakers who criticized the move, waring them not to "interfere" with the administration's bare-knuckle negotiating.
But the talks with Canada snagged over the mechanisms used to resolve disputes among partners, and on Ottawa's strictly controlled dairy sector. The U.S. lost thousands of businesses and millions of jobs. Lander also believes Trump would need Congressional approval to withdraw from NAFTA "Because NAFTA was enacted through an act of Congress, Congress has to undo it", he said in a phone interview. And it's considering slapping tariffs of up to 25 percent on an additional $200 billion in Chinese imports after a public comment period ends Thursday.