It was a historic day for King Charles as he became the first British monarch to address a joint session of Congress in 35 years, before enjoying a lavish dinner at the White House. There were jokes, subtle digs, and the supposedly apolitical monarch even appealed to Donald Trump on Nato and Ukraine – but how did the US president react? Helen Pidd speaks to the Guardian columnist and host of Politics Weekly America, Jonathan Freedland – watch on YouTube . Help support our independent journalism at theguardian.com/infocus