while in arunachal pradesh, singh was an extremely vocal advocate articulating that arunachal pradesh is a non-negotiable part of sovereign india. he also crusaded for the inner line permit and restricted area permit required for travel to arunachal pradesh to be abolished. in addition, he worked hard for ensuring connectivity of arunachal pradesh with the rest of india by building an airport in the state, constructing a railway line and improving the road network.