WASHINGTON - APRIL 1:  Documentary filmmaker Ken Burns speaks 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 the first African American heavyweight boxing champion John Arthur 'Jack' 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 7 months ago

WASHINGTON - APRIL 1: Documentary filmmaker Ken Burns speaks 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 the first African American heavyweight boxing champion John Arthur 'Jack' 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'.