(CNN) The Trump administration moved Thursday to jumpstart the approval process for President Donald Trump's replacement for the North American Free Trade Agreement, applying further pressure on House Democrats to consider the trade plan.

US Trade Representative Robert Lighthizer submitted the White House's draft statement of administrative action — a summary of legal changes required to comply with the US-Mexico-Canada Agreement — to Congress on Thursday, a USTR spokesperson said.

The move starts a 30-day clock for House Democrats and the administration to come to an agreement on the text of a bill enacting Trump's deal. After 30 days, the White House will be able to submit legislation of the deal for Congress to consider, but it is not required to.

The administration wants to ratify the agreement before the end of the year, and Thursday's move would set up a vote in the fall if Trump puts forward the legislation.

The move drew a quick reply from House Speaker Nancy Pelosi , who had warned the White House not to move forward yet as Democrats seek changes on key aspects of the agreement.

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