In 1919, Nosratoddoleh Firouz, the minister of justice, decided to establish an Advanced School of Law in order to provide the department and the legal profession with qualified personnel[3] and competent lawyers, respectively.

[6][7] In 1941, at the time of the Anglo-Soviet invasion of Iran, Ameri was responsible for the Ministry of Foreign Affairs and thus played a key role in the subsequent developments.

[8][self-published source] Shortly thereafter, since presence of foreign troops on Iranian soil had caused major internal problems, Rezā Shāh ordered Ameri to assume the responsibilities of the Minister of Interior.

The mission of this delegation was to have discussions with Stalin in order to arrange an end to the continued occupation of Azarbaijan by the Soviet Union.

Returning to government service Ameri assumed the positions of Attorney-General (Prosecutor-General) and Ambassador to Austria,[12][13] retiring in 1960.