House Speaker Nancy Pelosi has used multiple pens to sign her name on the impeachment articles against President Donald Trump.
Then she handed each signing pen to the assembled chairmen and House managers who will prosecute the case in the Senate.
Signing pens are held in high value in Washington, often handed out on more celebratory occasions. They can be seen framed and hung in lobbies across the city as trophies of proximity to power.
Mr Trump has engaged in the tradition himself.
But Mrs Pelosi handed out the pens on a darker day, as she signed the impeachment articles against only the third president in history.
White House press secretary Stephanie Grisham on Wednesday criticised Pelosi for the pens and the speaker's demeanour, which got some criticism on social media for being too cheery for such a grave development.
"Nancy Pelosi's souvenir pens served up on silver platters to sign the sham articles of impeachment," Grisham tweeted, reposting a photo.
Pelosi, she wrote, "was so sombre as she gave them away to people like prizes".
Pelosi's signature sent the articles against Trump to the Senate for a trial which is expected to open on Thursday.
The House-passed documents charge the president with abuse of power and obstruction of Congress for pressuring Ukraine to help him politically.
Trump said the whole thing is a "hoax" and claims he is a victim of a political "witch hunt" led by Pelosi.
Before the signing, aides set out two small trays containing more than two dozen black pens emblazoned with Pelosi's signature.
She entered the room and sat at a table, the documents and pens before her.
Standing around her were the House prosecutors and the committee chairmen who had worked on Trump's impeachment.
Pelosi picked up each pen, signed a bit, and handed each one to a politician.
Australian Associated Press