He signed the memorandum for the president Woodrow Wilson, addressing the question of the recognition of the Lithuanian statehood by the United States.

In independent Lithuania Stulginskis was in charge of organizing the national army to defend the country against the aggressions of Bolsheviks and Poles.

Many times served as a minister, May 1920 – 1922 he was Speaker of the Constituent Assembly of Lithuania and thus acting president of the republic.

After World War II in 1952 he was officially sentenced by the Soviet authorities to 25 years in prison for his anti-socialist and clerical policies in pre-war Lithuania.

Stulginskis settled in Kaunas, where he died on 22 September 1969, aged 84, the last of the Signatories of the Act of Independence of Lithuania.