Person missing from King Charless US itinerary appears to be Prince Harry

Here is a rewritten version of the news article in a neutral newsroom style:

A member of the royal family appears to be missing from King Charles’s U.S. itinerary, according to reports.

The British Embassy has hosted a royal couple at a garden party, which was attended by several hundred guests.

King Charles and former US President Donald Trump are set to meet for face-to-face talks ahead of the king’s rare speech to Congress.

In the past, the UK has used royal visits to strengthen its relationship with the US. The details of how this is achieved have been reported in previous articles.

Today, King Charles will address a joint session of Congress, marking a rare occasion for a British monarch to speak directly to the US legislative body.

The live updates from today’s events can be found on various news outlets.

Source: Google News World