; and (iv) inform planning; (C) convene with relevant private sector entities to share best practices, planning, and capabilities to respond to potential supply chain shocks; and (D) develop contingency plans and coordination mechanisms to ensure an effective and coordinated response to potential supply chain shocks. (3) Subgroups In carrying out the activities described in paragraph (2), the Under Secretary may establish subgroups of the unified coordination group established under paragraph (1) led by the head of an appropriate Federal agency. (4) International agreements The Under Secretary, in consultation with the United States Trade Representative and any other relevant Federal agency, may enter into agreements with governments of countries that are allies or key international partners of the United States relating to enhancing the security and resilience of supply chains in response to supply chain shocks. (h) Designations Not later than 180 days after the date of enactment of this Act, the Under Secretary shall— (1) designate— (A) critical industries; (B) supply chains; and (C) critical goods and services; (2) provide for a period of public comment and review in carrying out paragraph (1)