Gordon Sondland, the US envoy to the European Union, denied the allegations, with his lawyer alleging that the accusers were trying to taint his credibility in the inquiry.
The Portland Monthly published named accounts by three women who said that Sondland, a wealthy hotel owner from Seattle, retaliated against them professionally after they rejected him sexually.
One of the women, Jana Solis, said she met Sondland in 2008 when she was seeking work in her position as a safety expert for hotels.
She said Sondland met her for lunch and offered her a job as “my new hotel chick” before slapping her rear.
She said Sondland later invited her to his Portland home to evaluate his personal art collection which included a picture of himself with then president George W. Bush and that he exposed himself in the pool house.
She said Sondland at a later meeting also forcibly kissed her.
Another woman, Nicole Vogel, said she met Sondland in 2003 over dinner to seek investment in a new magazine.
He then took her to a hotel he owned and invited her to see a room, where he requested a hug and then “grabs my face and goes to kiss me,” she said.
Vogel said she refused and left. She pointed to an email afterward in which Sondland declined funding for her project.
Sondland in a statement rejected all the accusations and accused Vogel of “underhanded journalism” out of anger that he did not invest in the magazine.
“These untrue claims of unwanted touching and kissing are concocted and, I believe, coordinated for political purposes,” he said.
“They have no basis in fact and I categorically deny them,” he said.
Vogel owns the Portland Monthly, which published the article. The magazine said that, due to her implication in the story, it teamed up with ProPublica, a respected non-profit news group known for investigations.
A lawyer for Sondland told the magazine the article was timed to damage the ambassador’s credibility in the impeachment inquiry.
Sondland donated $1m to Trump’s inauguration and was afterward named ambassador to the European Union.
Read More: British Prince denies sex claims
Despite his support for Trump, Sondland, testifying last week under oath before lawmakers, said he was following the president’s orders in demanding that Ukraine investigate domestic rival Joe Biden before he would agree to a White House summit.
US ambassador Sondland’s lawyer even suggested the women may be retaliating against the ambassador after failed business opportunities.