WASHINGTON - APRIL 1:  Documentary filmmaker Ken Burns (L) speaks as Dorothy Cross (C), great niece of the first African American heavyweight boxing champion John Arthur 'Jack' Johnson, and Cross' daughter Constance Hines (R) listen during a news conference on Capitol Hill April 1, 2009 in Washington, DC. Sen. McCain and Rep. Peter King (R-NY) introduced a resolution calling on President Barack Obama to posthumously pardon Johnson, who was a victim of what is widely regarded as a racially motivated conviction in 1913 for violating a law prohibiting taking women across state lines for 'immoral purposes'. Getty Images logo Getty Images 8 months ago

WASHINGTON - APRIL 1: Documentary filmmaker Ken Burns (L) speaks as Dorothy Cross (C), great niece of the first African American heavyweight boxing champion John Arthur 'Jack' Johnson, and Cross' daughter Constance Hines (R) listen during a news conference on Capitol Hill April 1, 2009 in Washington, DC. Sen. McCain and Rep. Peter King (R-NY) introduced a resolution calling on President Barack Obama to posthumously pardon Johnson, who was a victim of what is widely regarded as a racially motivated conviction in 1913 for violating a law prohibiting taking women across state lines for 'immoral purposes'.