When provincial autonomy was introduced in 1935, Bishnuram served as the finance minister in
Gopinath Bordoloi's cabinet. In 1950, Bishnuram was elected
Chief Minister of Assam and served from 1950 to 1957. As the Chief Minister, Medhi understood the gravity of the illegal influx from Bangladesh posing serious threat to the local population. He took stern action against illegal settlers which made him unpopular amongst few powerful members of his own party who considered the settlers as prominent vote bank. Medhi also advocated for strong action against the rebelling
Nagas. He was a
teetotaller and strict disciplinarian as an individual and also in public life. During his time, Naga insurgency was gaining momentum under
Angami Zapu Phizo. It is believed that initiative to divide the Naga leaders by the Government machineries led to the killing of another charismatic Naga leader Sakhrie in 1956 by Phizo group. It was also rumoured that Bishnuram's personal dislike for some of the tribal customs added fuel to the rebellion in the hilly areas of Assam. Certainly, Bishnuram disapproved activities of the communists, publicly deplored them and announced award of Ten Thousand on
Bishnu Prasad Rabha, another legendary son of Assam and rebel leader of the communist movement in Assam. He was equally suspicious on the activities of the Christian Missionaries and their role in fermenting secessionist activities in the hill districts of undivided Assam. Bishnuram's political adversaries, including many luminaries of Assam, labelled charges against him to the High Command anticipating erosion of political support for his hard measures against illegal settlers and Naga Rebellion. His relation with late Fakhruddin Ali Ahmed and other leaders slowly turned sour and eventually Bishnuram Medhi was taken out from Assam as the Governor of Madras in spite of being a popular public leader. His dedication, simplicity, honesty and love for Assam and India was legendary. He is known as the Iron Man of Assam. It's no wonder that after departure of Bishnuram from the political scenario of Assam, rampant illegal influx from Bangladesh took place on political patronage for which Bishnuram was a stumbling block. It took considerable time for the successor of Bishnuram, Late B P Chaliha, to appreciate the influx problem and take some steps during his third stint as Chief Minister. After his return from Madras, Bishnuram again became member of Legislative Assembly, yet he was not considered by his party for any sensitive post. Perhaps his love for his state and no nonsense approach became a misfit in the changed political equation. From 1958 to 1964, Bishnuram served as the
Governor of Madras. == Death ==