Charles and Camilla attended a dinner hosted by Barby Allbritton , the head of the prince 's charity in the U.S. , on Wednesday night . The royal couple are on a four-day trip to the U.S. which will mostly be spent in Washington D.C. before a visit to Louisville , Kentucky . On Wednesday morning , they were swarmed by well-wishers as they visited the Martin Luther King and Abraham Lincoln Memorials in D.C . They then headed to George Washington 's Virginia home before returning to D.C. , where Charles gave a passionate speech about the environment . Comment:
Charles and Camilla attended a dinner hosted by Barby Allbritton , the head of the prince 's charity in the U.S. , on Wednesday night . The royal couple are on a four-day trip to the U.S. which will mostly be spent in Washington D.C. before a visit to Louisville , Kentucky . On Wednesday morning , they were swarmed by well-wishers as they visited the Martin Luther King and Abraham Lincoln Memorials in D.C . They then headed to George Washington 's Virginia home before returning to D.C. , where Charles gave a passionate speech about the environment . On Thursday , the royal couple will meet with President Obama .