President Joe Biden and First Lady Jill Biden are traveling to Charleston, South Carolina, on Jan. 19 to attend a service at Royal Missionary Baptist Church in observance of Martin Luther King Jr. Day on Monday. Biden will honor King’s legacy and the continued efforts to make King’s dream that his “four little children will one day live in a nation where they will not be judged by the color of their skin but by the content of their character” a reality. After the 11 a.m. ET service, Biden will meet event attendees at the African American Museum, where the president will deliver additional remarks….