​currently, the ▼ asb of the aicpa gaas iiasb of the ifac irs pcaob sas has responsibility for establishing auditing standards for u.s. public​ companies, while the ▼ asb of the aicpa gaas iiasb of the ifac irs pcaob sas establishes auditing standards for u.s. private companies. prior to the creation of the​ pcaob, the ▼ asb gaas iiasb irs had responsibility for establishing auditing standards for both public and private compa