WASHINGTON — When President Barack Obama on Monday welcomes leaders from across the continent of Africa to the White House for a historic three-day summit, a coalition of elected federal officials led by U.S. Sen. Ed Markey are hopeful that the commander in chief will use the opportunity to call for an end to the … Continue reading MassLive: Sen. Ed Markey leads call for President Obama to use US-Africa Leaders Summit to push for an end to LGBT persecution, prosecution in Uganda, Nigeria