By LISA MASCARO and MARY CLARE JALONICK

WASHINGTON (AP) — President Donald Trump was impeached by the U.S. House of Representatives, becoming only the third American chief executive to be formally charged under the Constitution’s ultimate remedy for high crimes and misdemeanors.

The historic vote split along party lines Wednesday night, much the way it has divided the nation, over a charge that the 45th president abused the power of his office by enlisting a foreign government to investigate a political rival ahead of the 2020 election. The House then approved a second charge, that he obstructed Congress in its investigation.

The articles of impeachment, the political equivalent of an indictment, now go to the Senate for trial. If Trump is acquitted by the Republican-led chamber, as expected, he still would have to run for reelection carrying the enduring stain of impeachment on his presidency.

House Speaker Nancy Pelosi threw a bit of uncertainty into the process Wednesday night by declining to say when, or even whether, she would send the charges to the Senate. Trump tweeted Thursday that the Senate should just go ahead, and the Democrats “would lose by default,” but the trial cannot begin until the articles are delivered.

“The president is impeached,” Pelosi declared after the vote. She called it “great day for the Constitution of the United States, a sad one for America that the president’s reckless activities necessitated us having to introduce articles of impeachment.”

The votes for impeachment were 230-197-1 on the first charge, 229-198-1 on the second.

The trial is expected to begin in January in the Senate, where a vote of two-thirds is necessary for conviction. While Democrats had the majority in the House to impeach Trump, Republicans control the Senate and few if any are expected to diverge from plans to acquit the president ahead of early state election-year primary voting.

No Republicans voted for impeachment, and Democrats had only slight defections on their side. Voting was conducted manually with ballots, to mark the moment.