A key ally of the BJP in the north-east, Meghalaya Chief Minister Conrad Sangma today said that while last week's consultative meeting between the centre and chief ministers, political parties and civil society groups on the Citizenship (Amendment) Bill have been a "positive move", the BJP needs to "do a lot more" to address "serious concerns" among its allies in the north-east. The centre is working to pass the bill in the ongoing winter session of parliament. Mr Sangma's National Peoples' Party (NPP) passed a resolution in a party meeting opposing the bill last week.