Global Trade Accountability Act of 2021 This bill requires congressional approval of certain unilateral trade actions (i.e., restrictions on the importation of an article). Such actions may take effect without congressional approval for one 90-day period if the President determines that it is necessary because of a national emergency, because of an imminent threat to health or safety, for the enforcement of criminal laws, or for national security; and submits written notice of the determination to Congress. The U.S. International Trade Commission must report on the effects on the U.S. economy of any unilateral trade action taken pursuant to this bill.