BBC news US election 2020: Trump ally Chris Christie urges him to accept defeat
A prominent ally of Donald Trump has urged him to drop his efforts to overturn his loss to Joe Biden in the US presidential election.
Former New Jersey Governor Chris Christie called the president's legal team a "national embarrassment".
President Trump has refused to concede the election, making unsubstantiated claims of widespread electoral fraud.
Many Republicans have supported his legal efforts but a small but growing number have broken ranks.
On Saturday Mr Trump suffered a major blow in Pennsylvania, after a judge dismissed a lawsuit from the Trump campaign seeking to invalidate millions of mail-in votes in the battleground state.
In a scathing ruling, Judge Matthew Brann said his court had been presented with "strained legal arguments without merit and speculative accusations".
Can Trump overturn the election result? Five US election fraud claims fact-checked What is the electoral college? The move paves the way for Pennsylvania to certify Mr Biden's win - the Democratic president-elect leads there by more than 80,000 votes.
The certification is due to happen later on Monday, but the Trump campaign is appealing against the ruling.
Mr Biden is projected to defeat President Trump 306 to 232 in the US electoral college, which determines who becomes president - far above the 270 he needs to win.
What's wrong with Trump's legal efforts? Speaking to ABC's This Week programme on Sunday, Mr Christie, a former New Jersey governor, said: "Quite frankly, the conduct of the president's legal team has been a national embarrassment".
He said the Trump camp was often discussing election fraud "outside the courtroom, but when they go inside the courtroom they don't plead fraud and they don't argue fraud".
"I have been a supporter of the president's. I voted for him twice. But elections have consequences, and we cannot continue to act as if something happened here that didn't happen."
Attorney Sidney Powell, a member of US President Donald J Trump's legal team, speaks about the president's legal challenges to his election loss to President-elect Joe Biden in the Republican National Committee Headquarters in Washington, DC, USA, 19 November 2020 IMAGE COPYRIGHTEPA image captionSidney Powell made unsubstantiated claims at a news conference by Trump's legal team on Thursday Mr Christie was the first governor to endorse Mr Trump as a presidential candidate back in 2016. He also helped prepare the US president for his debates with Mr Biden earlier this year.
He singled out for criticism Sidney Powell, a lawyer who appeared with Trump's legal team during a press conference on Thursday. She claimed, without providing evidence, that electronic voting systems switched millions of ballots to Biden, and that he also won thanks to "communist money".
GFY
Its all right to be white!! Stupidity left unattended will run rampant Don't argue with stupid people, They will drag you down to their level and then win by experience
