Sen. Kamala Harris Kamala HarrisHarris faces pivotal moment with Supreme Court battle Nearly 40 Democratic senators call for climate change questions in debates Joe Biden has long forgotten North Carolina: Today's visit is too late MORE (D-Calif.) said Sunday she would not have voted for the North American Free Trade Agreement (NAFTA).

Harris, a 2020 Democratic presidential contender, made the comments on CNN's "State of the Union." She declined to weigh in on whether former Vice President Joe Biden Joe BidenBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Democratic groups using Bloomberg money to launch M in Spanish language ads in Florida Harris faces pivotal moment with Supreme Court battle MORE, who supported the 1994 agreement, or Sen. Bernie Sanders Bernie SandersOutrage erupts over Breonna Taylor grand jury ruling Dimon: Wealth tax 'almost impossible to do' Grand jury charges no officers in Breonna Taylor death MORE (I-Vt.), who opposed it, were correct.

She added, “I would not have voted for NAFTA, because I believe we can do a better job to protect American workers.”

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“We need to do a better job in terms of thinking about the priorities that should be more apparent now than perhaps they were then, which are issues like the climate crisis and what we need to build into these trade agreements,” Harris told CNN, although she demurred on whether she disagreed with President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE that international trade agreements put the middle class at a disadvantage and favored corporations.

“There is no question that over many decades, the rules have been written in a way that have been to the exclusion of lifting up the middle class and working people in America,” the presidential candidate said, adding that her proposed reforms to the tax code aim to address these issues. She added that U.S. policies must “supply and equip the American worker with the skills and the resources that they need to thrive.”

Business groups have lobbied for the passage of Trump’s proposed replacement for NAFTA, the U.S.-Mexico-Canada Agreement (USMCA), although its passage in Congress remains uncertain. Trump signed the deal last November with a proposed six-month timeline for Congress to take it up. Democratic congressional leaders are pushing for the agreement to include stronger labor and environmental protections.