The BBC is seeking to subpoena President Donald Trump’s son Donald Trump Jr., his daughter Ivanka Trump and son-in-law Jared Kushner in connection with a $10 billion defamation lawsuit the president is pressing against the U.K. broadcaster.

Lawyers for the BBC say the Trump family members “without question have personal knowledge” about President Trump’s intentions in delivering the speech at the heart of the case: his Jan. 6, 2021, address to supporters at the Ellipse as the Capitol attack was getting underway.

The president’s lawsuit alleges that a BBC documentary aired in the U.K. in 2024 defamed him by splicing together distant parts of the speech to make it sound like he was endorsing violence. The BBC has apologized for the editing but denies that it is valid grounds for a suit.

Drawing largely on testimony gathered by the House Jan. 6 Committee, the BBC’s attorneys say Donald Trump Jr. and Ivanka Trump were present as the president revised his speech and were on hand at the Ellipse as he spoke. The network’s lawyers also say Kushner drafted a proposed statement for the president condemning the violence.

The subpoenas seek both deposition testimony and relevant documents from the Trump family members.

Court filings indicate that the BBC tried to serve the subpoenas to Kushner and Ivanka Trump’s home in Miami in May, but police blocked the attempt. A lawyer for the Secret Service, Troy Epstein, informed the BBC’s lawyers by email that the agency could not accept the subpoenas.

“The United States Secret Service, as an agency of the United States Government, is not authorized to accept service of these subpoenas for these individuals, nor can we opine on how you all may best facilitate or effectuate service of these subpoenas,” Epstein wrote.

A similar attempt to serve Donald Trump Jr. at the Trump Organization’s Trump Tower offices in New York was also unsuccessful.

In a motion filed Friday in federal court in Miami, the BBC’s attorneys said the president’s lawyers also refused to accept the subpoenas. The network is asking the court to authorize service by mail or to order that service through President Trump’s attorneys is adequate.

Spokespeople for the Trump family members and for President Trump’s legal team did not immediately respond to requests for comment.

A federal judge in Florida has given President Donald Trump a temporary reprieve from an order that he share details of his businesses’ financial performance with the BBC in connection with a libel suit Trump filed against the network.

U.S. District Judge Roy Altman said he was putting that discovery order on hold while he decides on a motion by Trump to reframe and, in some respects, narrow his claims against the British Broadcasting Corporation in connection with a 2024 documentary aired in the U.K.

The legal fight is a test of whether Trump faces any significant negative consequences over the flurry of headline-grabbing, multi-billion-dollar lawsuits he has filed against media outlets he contends have wronged him.

Altman’s four-page order, dated Wednesday and made public Thursday, said he found merit in Trump’s contention that his bid to drop his claims of damage to his brand and businesses — focusing instead on damage to his reputation — might undercut the BBC’s need for the financial data.

“This is a compelling argument,” wrote Altman, a Miami-based Trump appointee.

Lawyers for the BBC argued that information on the value of Trump’s businesses will continue to be relevant to the case regardless, since Trump’s reputation is closely tied to his business acumen.

The BBC’s attorneys have also noted that Trump’s proposed new complaint, which is not yet public, still seeks $10 billion in damages, a sum they have suggested would be impossible to justify based solely on reputational injury.

Trump’s suit, filed last December, stems from a brief sequence in a 2024 BBC documentary, “Trump: A Second Chance.” Trump claims the program defamed him by splicing together clips of his Jan. 6, 2021 speech in a manner that made him appear to endorse his supporters’ engaging in violence at the Capitol, as many did that day.

The BBC has apologized for the editing, but contends any confusion was unintentional and not legally actionable. The network has asked Altman to dismiss the suit on various grounds, including that the federal court in south Florida lacks jurisdiction over the London-based broadcaster.

If Altman allows Trump to recast his complaint, the suit could be delayed for weeks or months as the BBC would get another opportunity to urge dismissal of the reframed suit and Trump’s lawyers would be permitted to respond.