FILE PHOTO: U.S. House Speaker Nancy Pelosi (D-CA) listens during the Wall Street Journal, at the Newseum in Washington, U.S., December 9, 2019. REUTERS/Al Drago

WASHINGTON (Reuters) - U.S. House Speaker Nancy Pelosi will hold a news conference on Tuesday to discuss the U.S. Mexico Canada (USMCA) trade deal as U.S. and Canadian officials prepared to fly to Mexico City to work on final changes to the agreement.

“We’re close. We’re not quite finished yet, we’re within range,” Pelosi told a forum of chief executives on Monday evening.

Her office did not elaborate on any announcement but she will be accompanied at the news conference by Representative Richard Neal, the chairman of the Ways and Means Committee in the Democratic-led House of Representatives.

Pelosi told the forum she expected the final language of the USMCA to be set by Tuesday, which would bring Democrats to a “moment of truth” on whether to proceed to passage.

She was working on the language of separate legislation on how the deal would be implemented, she said.

The Trump administration and Democrats in the U.S. House of Representatives are closing in on a deal following several intense days of negotiations with Mexico over potential changes to clauses concerning labor enforcement, steel and aluminum, biologic drugs and internet services.

U.S. Trade Representative Robert Lighthizer and White House senior adviser Jared Kushner are due to fly to Mexico City on Tuesday for meetings to try to pin down final details, an administration official told Reuters on Monday.

They will be joined by Canadian Deputy Prime Minister Chrystia Freeland, a spokesman for Freeland said.

As House speaker, Pelosi will decide whether and when to bring the trade legislation to the floor for a vote.