WASHINGTON, DC – In the days leading up to President Aliyev's visit to Washington for an international nuclear summit this week, more than 50 U.S. Representatives have joined with leaders of the House Foreign Affairs Committee in calling upon President Obama to leverage this visit to pressure the Azerbaijan leader to stop obstructing the implementation of the life-saving Royce-Engel peace proposals for Nagorno Karabakh, reported the Armenian National Committee of America (ANCA).