Washington DC, April 29 -- Even as US President Donald Trump spoke of his mother's 'crush' on King Charles III, and spoke of the UK-like weather, the simmering tension was quite visible between the leaders, comparable to that between the nations.

The Royal Couple were in the US on a formal visit that began Tuesday (local time) when Trump said he was "jealous" of the King's excellent speech at the ceremony held to greet the visiting dignitaries.

While Trump mostly stuck to the conventional speech, he said, "Thank you very much, everybody. What a beautiful British day this is. And it really is. Your Majesties, members of the British delegation, friends, service members, and distinguished guests, welcome to the beautiful White House. It is...