Andrew Mountbatten-Windsor is facing growing pressure from US officials and the family of his prominent accuser Virginia Giuffre to testify in the US about his links to paedophile financier Jeffrey Epstein.
Speaking to the BBC, Democratic Congressman Ro Khanna said the Royal Family had 'not been transparent', while Democratic Congresswoman Teresa Leger Fernandez said King Charles III 'should direct his brother' to go to the US to answer questions.
On Monday, the King said the Royal Family were 'ready to support' police in their inquiries.
Andrew has repeatedly denied any wrongdoing and reached an out-of-court settlement with Giuffre in 2022 containing no admission of liability.
In the King's first intervention in the latest round of revelations in the Epstein scandal, a Buckingham Palace spokesperson said if they were approached by the police, they stood 'ready to support them' in their investigation.
It added the King had 'made clear...his profound concern' over allegations against his brother, and the King and Queen's 'thoughts and sympathies have been, and remain with, the victims of any and all forms of abuse'.
Thames Valley Police announced it was assessing a complaint by anti-monarchy group Republic over the alleged sharing of confidential material by Andrew with Epstein.
The former prince appears to have knowingly shared confidential information with Epstein from his official work as trade envoy in 2010 and 2011, according to material in the latest release of files seen by the BBC.
Andrew has been contacted for comment but is yet to respond.
When asked by the BBC if the former prince should go to the US, Khanna said that would be 'appropriate'.
According to Khanna, the Royal Family should 'come clean' and lay out what they knew and what 'action they're going to take', urging for accountability for survivors of abuse.
The Congressman noted that the Royal Family were 'finally' requesting an investigation, indicating that victims had been denied justice.
Congresswoman Teresa Leger Fernandez called for more transparency, urging the King to have Andrew answer questions directly related to the allegations.
The latest emails released by the US Department of Justice reveal multiple unsuccessful approaches from US authorities for Andrew to help with Epstein inquiries. The former prince cannot be compelled by a subpoena to appear in the US, leading to frustration among lawmakers.
Amid the growing scrutiny, Andrew has been accused of sharing confidential trade details with Epstein, putting further pressure on the Royal Family.
Recent claims indicate a second woman may have traveled to the UK for a sexual encounter with Andrew, with evidence surfacing from the newly released Epstein files, which include controversial photographs.
Andrew has consistently and strenuously denied any wrongdoing, emphasizing that being named in the Epstein files does not imply misconduct.
