WASHINGTON—King Charles III arrives in Washington on Monday to publicly celebrate 250 years since a nascent U.S. republic ousted his forebears, and privately ensure that a fraying trans-Atlantic relationship can cope with another two-plus years of President Trump.
The four day visit—billed as Charles’s most high-wire diplomatic act since coming to the throne—will include a speech to Congress, the first time a British monarch has spoken there since 1991, a private audience with Trump and state dinner in Washington, as well as trips to New York and Virginia.
