[3] In January 2017, Hidayat led an investigation of his colleagues relating to a graft scandal on the court.

[4] In December 2017, he denied committing an ethics violation by lobbying the House of Representatives for an extension of his term in office.

He came under criticism over alleged backroom deals regarding the House's inquiry into the Corruption Eradication Commission (KPK) under the 2014 Legislative Institutions Law (MD3), which was under review by the Constitutional Court.

[6] He was re-elected to serve a second and final term until 2023 but he was replaced by Anwar Usman as the Chief Justice of the Indonesian Constitutional Court in April 2018.

[7] Arief Hidayat was one of the minority constitutional judges who ruled in favor of outlawing pre-marital sex and criminalizing consensual same-sex relations in the country in 2017.