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”.
The demonstration turned ugly as a mob forced its way into the congressional complex where lawmakers were certifying Mr Biden’s election victory.
Four protesters and a Capitol Police officer died in the mayhem.
A week later, Mr Trump became the first US president to be impeached twice.
His trial in the Senate will be the only one ever to have taken place after a president has left office.
On a call to his fellow Republican senators on Thursday, Senate minority leader Mitch McConnell said he had asked House Democrats to hold off sending the single impeachment article to the Senate until 28 January – the move that would kick-start the trial’s first phase.
Under this timetable, Mr Trump would then have two weeks – until 11 February – to submit his pre-trial defence. Arguments would be expected to begin in mid-February.
Republicans, who as of Wednesday no longer control the Senate, need the new Democratic majority leader, Mr Schumer, to agree to the idea.
Mr McConnell said in a statement: “Senate Republicans are strongly united behind the principle that the institution of the Senate, the office of the presidency, and former President Trump himself all deserve a full and fair process that respects his rights and the serious factual, legal, and constitutional questions at stake.”
Senator John Cornyn of Texas told Reuters that he and fellow Republicans had been discussing the need to allow Mr Trump “due process”.
Ten House Republicans sided with Democrats in impeaching the outgoing president on 14 January.
Even though Democrats now narrowly control the Senate, they would need the support of at least 17 Republicans in order to convict Mr Trump, because a two-thirds vote is required.
A handful of Senate Republicans have indicated they are open to conviction, but most have either cast doubt on the legality of trying a president after he has left office, or said the process would be too divisive.
Donald Trump left the White House on Wednesday morning and flew on Air Force One to his golf club in Palm Beach, Florida.
His motorcade passed hundreds of well-wishers before he arrived at Mar-a-Lago minutes before Mr Biden took the oath of office in Washington DC just before noon.
Mr Trump is expected to live at the resort he calls his “Winter White House”, despite concerns from some neighbours about the increased traffic and heightened security.
He is planning to maintain a tight-knit coterie of former White House aides in Florida.
According to reports, he wants to raise $2bn (£1.46bn) for his presidential library and has floated the idea of forming a new political party called the Patriot Party.
Mr Trump has hired South Carolina-based lawyer Butch Bowers to represent him in his Senate impeachment trial, according to Senator Lindsey Graham.
According to his website, Mr Bowers was a special counsel on voting matters at the US Department of Justice under President George W Bush.
He also served as counsel to two former governors of South Carolina, Nikki Haley and Mark Sanford.