This week in Washington (22 images)

President Donald Trump signs a posthumous Executive Grant of Clemency for boxer Jack Johnson in the Oval Office on Thursday. Johnson, the first African-American heavyweight champion, was convicted in 1913 for violating the Mann Act, designed to prevent prostitution and "immorality" but often exploited to intimidate interracial couples. Photo by Olivier Douliery/UPI

Trump shares a laugh with actor Sylvester Stallone, second right, after signing the pardon. Stallone, who played the title character in the 1976 Oscar-winning boxing film Rocky, reached out to the president earlier this year to plead Johnson's case. Trump is also joined by current heavyweight champion Deontay Wilder, second left, and Johnson's family. Photo by Olivier Douliery/UPI

A World Boxing Council belt, featuring former WBC president José Sulaimán Chagnón and Trump's faces, rests on the Resolute Desk. Photo by Olivier Douliery/UPI

A signed boxing glove lay on the sofa in the Oval Office. Photo by Olivier Douliery/UPI