New Delhi/Silchar, June 11 -- Trinamool Congress Rajya Sabha MP Sushmita Dev on Wednesday resigned from the Upper House, two days after her fellow lawmaker Sukhendu Sekhar Roy quit, further damaging the party's strength in Parliament, where the TMC also faces a rebellion among its Lok Sabha lawmakers. "I do hereby resign from the membership of Rajya Sabha, which may please be accepted with immediate effect," said her resignation letter. Dev's resignation was accepted by Rajya Sabha chairman, CP Radhakrishnan. "Sushmita Dev, an elected member of the Council of States (Rajya Sabha), representing the state of West Bengal, resigned her seat in the Rajya Sabha and her resignation has been accepted by the Chairman, Rajya Sabha, with effect from J...