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WASHINGTON, DC - JUNE 24: From L, House Minority Leader Nancy Pelosi (D-CA), Senate Minority Leader Mitch McConnell (R-KY), Senate Majority Leader Harry Reid (D-NV), and Speaker of the House John Boehner (R-OH) hold their hand over their hearts during the presentation of colors during a ceremony to posthumously award the Congressional Gold Medal Dr. Martin Luther King, Jr. and Coretta Scott King, on Capitol Hill, June 24, 2014 in Washington, DC. The Congressional Gold Medal is Congress's highest civilian honor. (Drew Angerer/Getty Images)

WASHINGTON, DC - JUNE 24: From L, House Minority Leader Nancy Pelosi (D-CA), Senate Minority Leader Mitch McConnell (R-KY), Senate Majority Leader Harry Reid (D-NV), and Speaker of the House John Boehner (R-OH) hold their hand over their hearts during the presentation of colors during a ceremony to posthumously award the Congressional Gold Medal Dr. Martin Luther King, Jr. and Coretta Scott King, on Capitol Hill, June 24, 2014 in Washington, DC. The Congressional Gold Medal is Congress's highest civilian honor. (Drew Angerer/Getty Images)