Washington (CNN) House Democrats and the White House have reached a deal to advance President Donald Trump's renegotiated North American Free Trade Agreement after months of negotiations for changes on Democratic priorities, House Speaker Nancy Pelosi announced on Tuesday morning.

"There is no question of course that this trade agreement is much better than NAFTA," Pelosi said at a news conference.

If ratified, the trade deal would represent Trump's primary legislative success since Democrats took control of the House of Representatives last November. The pact is also viewed as essential by a number of Democratic freshmen from more conservative districts, who not only support the deal on its substance but also believe a bipartisan achievement will play well on the campaign trail.

Asked why Democrats would hand Trump a victory on a major legislative priority even as the House proceeds with articles of impeachment, Pelosi said: "We're declaring victory for the American worker and what is in this agreement."

Ways and Means Committee Chairman Richard Neal said completion of the deal came after a round of intense discussions and phone calls between key parties over the weekend.

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