ULFA derives its credibility from : (a) illegal influx of Bangladeshis in Assam and (b) neglect of Assam's economy by successive governments at the Centre. Govt. of India is aware of this illegal immigration but remains silent since it does not want to offend a "particular religious group". The domegraphy of Assam and border districts of West Bengal have undergone complete change due to Bangladeshi immigration.
Unless the core issues are addressed, ULFA will continue to have a rationale of its existence.