US Ambassador to India Sergio Gor arrived in Guwahati on Tuesday to attend the swearing-in ceremony of Assam CM-designate Himanta Biswa Sarma. PM Narendra Modi, along with top Union government leaders, will also attend the swearing-in ceremony. The NDA alliance won 102 seats in the 126-member Assam Assembly, paving the way for its third consecutive term in the state.