President Joe Biden took to X, formerly Twitter, on Friday to congratulate Keir Starmer on becoming the new U.K. Prime Minister. What Happened: “Congratulations to Prime Minister Keir Starmer on becoming Prime Minister of the United Kingdom,” Biden wrote in a post on X. “I look forward to our shared work in support of freedom and democracy around the world, and to further strengthening the special relationship between our two countries.” This is the first reaction from Biden on X to the U.K.’s newly elected prime minister. According to a statement from the White House, Biden also spoke with St…