Prince Charles and Camilla are to meet President Barack Obama during a four-day tour of the US.
The White House said President Barack Obama will host the royal couple in the Oval Office on March 19.
Charles and Camilla will be in the US from March 17 to March 20 to “promote the UK’s partnership with the United States”, Clarence House said.
They will also mark the Magna Carta’s 800th anniversary during their trip.
Other parts of their tour will include a tour of Mount Vernon – home of America’s first president, George Washington – and a visit to Louisville, Kentucky, home city of legendary boxer Muhammad Ali.
While in Washington DC, the Prince of Wales will mark the Magna Carta’s anniversary during a visit to the National Archives.
Prince Charles will view the Charters of Freedom documents and the 1297 version of the Magna Carta, which is embodied in the American Bill of Rights and the Constitution.
He will also receive an award for “exceptional leadership in conservation” from the International Conservation Caucus Foundation.
Also in Washington DC, the prince and duchess will visit the Armed Forces Retirement Home, set in the same grounds as the Lincoln Cottage, where it is believed Abraham Lincoln wrote the last draft of the Emancipation Proclamation.
The Duchess of Cornwall, who has regularly raised awareness about rape victims, will carry out several solo engagements, including visiting the District of Columbia’s assault response team.
This is a coalition of 12 public and private community agencies which works to prevent assault and help victims of such crimes.
Camilla will visit a food literacy project for young people at a local farm while in Louisville, which will be where the couple ends their trip.
Prince Charles visited the Oval Office in 2011 to discuss energy and environmental issues with President Barack Obama.
Prince Charles and the Duchy of Cornwall’s tax affairs are due to be examined by an influential set of MPs in the UK.
Prince of Wales’ most senior official, William Nye, has been called to give evidence to the Public Accounts Committee on Monday afternoon.
The committee will consider whether Prince Charles is paying his fair share of tax and explore why the duchy does not pay corporation tax or capital gains tax.
It is only the second time that royal accounts have been examined this way.
The last time Prince Charles’s representatives came before the Public Accounts Committee they were accused of performing financial “jiggery pokery” and he was said to be the recipient of the “best housing benefit scheme in the world”.
Prince Charles and the Duchy of Cornwall’s tax affairs are due to be examined by an influential set of MPs in the UK
The Duchy of Cornwall provides the heir to the throne with a private income.
Royal officials argue the duchy is a private landed estate, not a corporation or a public body, so it is exempt from capital gains tax.
They also say Prince Charles pays income tax on the money he receives from the hereditary estate after business expenses have been deducted.
Earlier this month, the prince faced calls from Andrew George, the Liberal Democrat MP for West Cornwall, to “come clean” about the Duchy of Cornwall’s tax arrangements.
The duchy is a £762 million ($1.2 billion) estate of about 131,000 acres, mostly in the south-west of England, from which the prince received a record £19 million ($30 million) last year.
Clarence House has said public funding for the Prince of Wales fell by £1 million to £1.2 million in the last financial year, out of a total income of £20.2 million.
Prince Charles today said he was “thrilled” at Kate Middleton’s pregnancy, after the beaming Duchess of Cambridge left hospital following four days of treatment for acute morning sickness.
The Prince of Wales expressed his delight at the “marvelous” news and added: “It’s a very nice thought to become a grandfather in my old age. I’m very glad my daughter-in-law is getting better, thank goodness.”
Prince Charles also alluded to a prank call to the hospital by two Australian DJs on Tuesday morning that duped a nurse into revealing details about Kate Middleton’s health, joking to reporters: “How do you know I’m not a radio station?”
Kate Middleton, 30, was discharged from the King Edward VII Hospital in central London – where she smiled and told reporters she was “feeling much better” – and headed to Kensington Palace to rest.
Prince Charles said he was thrilled at Kate Middleton’s pregnancy
Kate Middleton, who is less than 12 weeks pregnant, was wrapped up against the cold in a coat and scarf, and the royal couple will now spend time at their London home to allow for her to recuperate.
She was admitted on Monday after developing the condition of hyperemesis gravidarum, and was suffering from the effects of dehydration.
For medical staff to allow Kate Middleton to go home, her severe vomiting must be under control and they are likely to have given her anti-sickness medication.
According to newly-updated “protocols” approved by Queen Elizabeth II, Duchess of Cambridge has been placed firmly down the royal pecking order.
A document is said to have been circulated privately in the Royal Household, clarifying Kate’s status.
Despite being the future Queen herself, as a former commoner, the once Kate Middleton must apparently show reverence to the “blood princesses”.
This means Kate is expected to curtsey to those born royal, such as Princesses Beatrice and Eugenie – both in public and in private.
The rule only applies when her husband, Prince William, is not present.
Royal observers suspect Kate will not mind the new rules as she is keen to please everybody, but Prince William may be less happy.
In his absence, Kate must also curtsey to other blue-blooded women in the Royal Household including Princess Anne and Princess Alexandra, the Queen’s cousin.
In the case of the Countess of Wessex, it is she who will have to curtsey to Kate – even though she is a generation older and is married to the Queen’s son, Edward.
According to new protocols, Kate Middleton is expected to curtsey to those born royal, such as Princesses Beatrice and Eugenie, both in public and in private
The Earl of Wessex’s wife was once the second-highest ranking woman in the Royal Family because neither of the Queen’s other sons, Prince Charles and Prince Andrew, were married.
This is effectively Sophie’s second “demotion”, having been pushed down the list in 2005 after Prince Charles married Camilla, and finding she was expected to curtsey to the Duchess of Cornwall.
The complex new rules come in a little-known edict entitled the Order Of Precedence Of The Royal Family To Be Observed At Court, which the Queen has updated to take into account Prince William’s wife.
When Prince William is with her, Kate does not need to bend the knee to either Beatrice or Eugenie.
But she must always curtsey to the Queen and the Duke of Edinburgh, the Prince of Wales and the Duchess of Cornwall, whether Prince William is present or not.
The thorny question of how Kate would fit into the UK’s first family has long been a subject of speculation among royal observers.
The Princess Royal, for example, is said to have refused to ever curtsey to Princess Diana or to Camilla, on the basis they were outsiders whereas she had given her whole adult life to royal service.
In an effort to avoid an epic battle of royal egos, the Queen drew up the first Order of Precedence in 2005, after Prince Charles married Camilla.
Its effect was to change the order along “blood lines” so that Princesses Anne, Beatrice, Eugenie and Alexandra – the granddaughter of George V – were all ahead of Camilla.
The etiquette, though arcane to some, is taken very seriously by the royals, who bow and curtsey to each other in public and behind closed doors.
The Order of Precedence affects other aspects of royal protocol too, such as who arrives first at an event. For example, Camilla was forced to wait in the drizzle outside the Guards Chapel, Windsor, for the arrival of Princess Anne at a memorial service in 2006, because Prince Charles had not accompanied her.
Royal historian Brian Hoey, an expert on court protocol, predicted when Prince William married Kate that: “Kate will take the rank of her husband, which means that when she’s at court, Princesses Beatrice and Eugenie should curtsey to her. But I don’t think there’s a chance they will.”
While Prince William feels warmly towards his cousins, Beatrice and Eugenie, he’s conscious of the fact that they are lesser royals.
“As future King, he will wish to see them behaving correctly towards their future Queen – but their attitude is likely to be: <<Why should I? I was born royal – Kate wasn’t>>.”