The governors of six northeastern U.S. states have invited the premiers of six Canadian provinces to meet in Boston as both sides face the impacts of tariffs.

President Donald Trump's policy of imposing tariffs on products imported from America's northern neighbor and other nations has sparked controversy both in the U.S. and abroad.

The group of governors includes five Democrats — Massachusetts Gov. Maura Healey, Maine Gov. Janet Mills, New York Gov. Kathy Hochul, Connecticut Gov. Ned Lamont, and Rhode Island Gov. Daniel McKee — and one Republican — Vermont Gov. Phil Scott.

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The governors are inviting the premiers of the Canadian provinces of New Brunswick, Newfoundland and Labrador, Nova Scotia, Ontario, Prince Edward Island and Québec, Healey and Mills press releases indicate.

"While the international uproar over tariffs threatens to upend the economies of our respective communities, we write to reaffirm our friendship and unique interdependence. Ours is a cherished relationship that is founded not only on mutual financial advantages but also on centuries-old familial and cultural bonds that supersede politics,"  the U.S. politicians said in their invitation.

"As Governors of the Northeast, we want to keep open lines of communication and cooperation and identify avenues to overcome the hardship of these uninvited tariffs and help our economies endure. As we continue to navigate this period of great uncertainty, we are committed to preserving cross border travel, encouraging tourism in our respective jurisdictions, and promoting each other's advantages and amenities," they noted.

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Trump, who has repeatedly indicated that he would like Canada to become America's 51st state, is meeting with Canadian Prime Minister Mark Carney on Tuesday.

"Meet the Press" moderator Kristen Welker asked Trump if he would speak to Carney about making the country the 51st state. 

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"I'll always talk about that. You know why? We subsidize Canada to the tune of $200 billion dollars a year. We don't need their cars, in fact we don't want their cars. We don't need their energy, we don't even want their energy, we have more than they do. We don't want their lumber, we have great lumber, all I have to do is free it up from the environmental lunatics. We don't need anything that they have," Trump declared.

Mills said that the economic and cultural relationships between the U.S. and Canada have been "strained by the president’s haphazard tariffs and harmful rhetoric targeting our northern neighbors," according to the press releases.

Venezuelan President Nicolas Maduro's regime does not direct the activities of the Tren de Aragua, according to a newly public memo released by U.S. intelligence agencies last month.

The memo, published Monday by the New York Times, undercuts President Donald Trump's justifications for using the Alien Enemies Act to facilitate deportations. The report represents the "sense of the community" of the National Intelligence Council and states they have not found a direct link between Maduro's regime and TdA leadership.

"While Venezuela’s permissive environment enables TDA to operate, the Maduro regime probably does not have a policy of cooperating with TDA and is not directing TDA movement to and operations in the United States," the report states.

"The IC bases this judgment on Venezuelan law enforcement actions demonstrating the regime treats TDA as a threat; an uneasy mix of cooperation and confrontation rather than top-down directives [that] characterize the regime's ties to other armed groups; and the decentralized makeup of TDA that would make such a relationship logistically challenging," the memo continues.

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While the memo cuts against the claim that support for TdA is a direct policy from Maduro's regime, it does note that FBI analysts agree that "some Venezuelan government officials facilitate TDA members' migration from Venezuela to the United States and use members as proxies … to advance what they see as the Maduro regime's goal of destabilizing governments and undermining public safety in these countries."

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The Alien Enemies Act of 1798, which allows deportation of natives and citizens of an enemy nation without a hearing, has been invoked three times, during the War of 1812, World War I and World War II.

Trump's administration declared in March that all Venezuelan citizens 14 years or older who are members of TdA, are within the U.S. and are not naturalized or lawful permanent residents of the U.S. may be apprehended, restrained, secured and removed as "alien enemies."

Key to the White House's argument is its claim that TdA operates in conjunction with Cártel de los Soles, the Nicolás Maduro regime-sponsored narco-terrorism enterprise based in Venezuela.

In 2020, Maduro and other regime members were charged with narco-terrorism and other crimes in an alleged plot against America.

Fox News' Alexandra Koch contributed to this report.