YEREVAN, MARCH 21, ARMENPRESS. United States Congressman Adam Schiff (D-CA) is collecting signatures on a U.S. House letter calling out newly appointed US Senior Advisor for Caucasus Negotiations Louis Bono for ruling out U.S. sanctions against Azerbaijan for its 100-day blockade of Artsakh/Nagorno Karabakh, the Armenian National Committee of America (ANCA) reported.