; selection The Attorney General— (1) shall ensure that all newly hired immigration judges and Board of Immigration Appeals members are highly qualified experts on immigration law and who are trained to conduct fair, impartial adjudications in accordance with applicable due process requirements; and (2) may not give any preference, in selecting immigration judges, to candidates with prior government experience compared to equivalent subject-matter expertise resulting from nonprofit, private bar, or academic experience. (c) Addressing support staff shortages Subject to the availability of amounts made available in advance appropriation Acts, the Attorney General shall ensure that each immigration judge has sufficient support staff, adequate technological and security resources, and appropriate courtroom facilities. (d) Additional board of immigration appeals personnel The Attorney General shall increase the number of Board of Immigration Appeals staff attorneys (including necessary additional support staff) to efficiently process cases by at least 23 attorneys per year for each of fiscal years 2020, 2021, and 2022. (e) GAO report The Comptroller General of the United States shall— (1) conduct a study of the impediments to efficient hiring of immigration court judges within the Department of Justice; and (2) propose solutions to Congress for improving the efficiency of the hiring process. 507. Improved training for immigration judges and members of the Board of Immigration Appeals (a) In general To ensure efficient and fair proceedings, the Director of the Executive Office for Immigration Review shall establish or expand (as appropriate) training programs for immigration judges and members of the Board of Immigration Appeals. (b) Mandatory training Training referred to under subsection (a) shall include— (1) expansion of the training program for new immigration judges and Board members to include age-, gender-, and trauma-sensitivity