Muriel had years of experience as a public speaker, and was an active senator. According to Karina Karr, Humphrey was ostracised by the all-male Senate, but served on the Foreign Relations Committee and voted reliably to support the foreign policy of the Jimmy Carter administration. According to an official Congressional biographical summary, "Muriel Humphrey pursued her own interests during her brief tenure, supporting an extension of the Equal Rights Amendment (ERA) ratification deadline and advocating several programs to benefit persons with mental disabilities."
