Republicans in the US Senate are asking Democrats to delay the start of former President Donald Trump’s impeachment trial until February.
They argue that this will give Mr Trump time to prepare a defence.
The House of Representatives last week charged Mr Trump with inciting a deadly riot at the US Capitol, paving the way for a Senate trial that could see him barred from holding public office.
The Senate’s top Democrat, Chuck Schumer, is reviewing the request.
Some Democrats back a delay, saying it will give the Senate more time to confirm cabinet nominees, but others say a speedy trial is necessary to allow the country to move on.
Mr Trump flew to Florida as his term ended on Wednesday, skipping his successor Joe Biden’s inauguration.
Mr Trump’s actions ahead of the 6 January riot are at the heart of the case.
The then president told protesters near the White House to “peacefully and patriotically” make their voices heard as they prepared to march towards the US Capitol building.
He also told them to “fight like hell”.