He was an active member of NSUI, associated mostly in students' movements in Arunachal Pradesh and North East. He was involved in the emancipation of women in Arunachal Pradesh and in the workers' movement and education for tribal boys and girls. In 1994, he was elected for the first time to the Arunachal Pradesh Legislative Assembly. As a cabinet minister, he fought for the separation of judiciary and executive. The Land Settlement Bill for Arunachal Pradesh was legislated as Land Management Minister.
Positions held:
General Secretary, Arunachal Students' Union, Shillong, 1990–91
General Secretary, All Nyishi Students' Union
General Secretary (1988) and President, All Arunachal Pradesh Students' Union (AAPSU)1992-94
Founding Member, North East Students' Organisation (NESO)
General Secretary, Students' Welfare Association, Palin Chamgang (SWAPCA), 1988–90
Advisor to State NSUI Arunachal Pradesh, 1999–2003
Honorary Secretary INTUC, Arunachal Pradesh Unit, 1997
Political positions held
1994-99 and 1999-2004 - Member, Arunachal Pradesh Legislative Assembly
1995 - chairman, Committee on Government Assurance, Member, Estimated Committee, Rules Committee and House Committee
1998-1999 - Minister, Law, Legislative and Justice, Govt. of Arunachal Pradesh
1999 - Minister, Personnel and Administrative Reform, Govt. of Arunachal Pradesh
1999-2002 - Minister IPR and P & Land Management, Govt. of Arunachal Pradesh
2002 - General Secretary, Arunachal Pradesh Congress Committee (APCC)
April 2002- July 2003 - Minister, Education, Govt. of Arunachal Pradesh
2004-2005 - Working President, Arunachal Pradesh Congress Committee
2006 to date - General Secretary, North East Congress Coordination Committee (NECCC)
2007- March 2009 - Adviser to Chief Minister of Arunachal Pradesh
2008 to date - Vice President, Arunachal Pradesh Congress Committee
2009 - Elected to 15th Lok Sabha
31 August 2009 - Member, Committee on External Affairs
23 September 2009 - Member, Committee on Government Assurances
