A majority of House lawmakers have said they plan to support at least one article of impeachment against President Trump, as the president railed against the process in an extraordinary letter to House Speaker Nancy Pelosi (D-Calif.).

No Republicans have said they will break ranks in the full House vote, which is expected Wednesday.

In his six-page letter to Pelosi, Trump accused Democrats of “declaring open war on American Democracy.” Pelosi later sent a letter to House Democrats urging them to join her in voting to impeach Trump.

The developments came as the House Rules Committee was meeting to set the parameters for the historic debate expected Wednesday over whether the president’s conduct toward Ukraine violated his oath of office.

At the heart of the Democrats’ case is the allegation that Trump tried to leverage a White House meeting and military aid, sought by Ukraine to combat Russian military aggression, to pressure Ukrainian President Volodymyr Zelensky to launch an investigation of former vice president Joe Biden and his son Hunter Biden, as well as a probe of an unfounded theory that Kyiv conspired with Democrats to interfere in the 2016 presidential election.

●Senate leaders battle over impeachment trial after Senate Majority Leader Mitch McConnell (R-Ky.) rejects Democrats’ calls for witnesses.

●Americans locked in partisan stalemate on removing Trump from office, Post-ABC poll finds.

●Russian disinformation network said to have helped spread smear of U.S. ambassador to Ukraine.