President Donald Trump's older sister, a former federal judge, was secretly recorded sharply criticising her brother, including the accusation "he has no principles".
Maryanne Trump Barry was secretly recorded by her niece, Mary Trump, who recently released a book denouncing the president, called Too Much And Never Enough: How My Family Created The World's Most Dangerous Man.
Mary Trump said she made the recordings in 2018 and 2019.
In one recording, Ms Barry (83) says she had heard a 2018 interview with her brother on Fox News in which he suggested he would put her on the border to oversee cases of immigrant children separated from their parents.
"His base, I mean, my God, if you were a religious person, you want to help people. Not do this," Ms Barry says.
At another point, she says: "His goddamned tweet and lying, oh my God."
She adds: "I'm talking too freely, but you know. The change of stories. The lack of preparation. The lying. Holy s***."
Ms Barry can also be heard saying she guesses her brother has never read her opinions on immigration cases.
"What has he read?" Mary Trump asks her aunt.
Ms Barry responds: "No. He doesn't read."
The recordings came to light just a day after the late Robert Trump, brother to Maryanne and the president, was remembered in a service at the White House. Later, Mr Trump was dismissive of the revelations in the recordings.
"Every day it's something else, who cares. I miss my brother, and I'll continue to work hard for the American people," Mr Trump said. "Not everyone agrees, but the results are obvious. Our country will soon be stronger than ever before."
In the weeks since the release of Mary Trump's tell-all book about her uncle, she has been questioned about the source of some of its information.
Nowhere in the book does she say that she recorded conversations with her aunt.
Mary Trump revealed at the weekend that she had covertly taped 15 hours of face-to-face conversations with Ms Barry.
"Mary realised members of her family had lied in prior depositions," said Chris Bastardi, a spokesman for Mary Trump. He added: "Anticipating litigation, she felt it prudent to tape conversations in order to protect herself."
The president has frequently spoken highly of his sister and the recordings are the first time a family member, outside of Mary Trump, has been critical of him.
At one point in the recordings, Ms Barry says to her niece: "It's the phoniness of it all. It's the phoniness and this cruelty. Donald is cruel."