; and (2) to perform the functions described in paragraph (1) during the hours set forth in section 2(b) beginning not later than the date set forth in such section. (b) Coordination The Secretary of Homeland Security shall coordinate with the appropriate officials of the Government of Mexico to implement this section. 4. Ports of entry modernization (a) In general The Commissioner of U.S. Customs and Border Protection, in consultation with the Administrator of General Services, shall conduct a study of commercial operations at the 10 busiest ports of entry to identify any improvements that could be made to such ports of entry to facilitate lawful international trade, including redesigning, modernizing, and improving the efficiency of such ports of entry and expanding their hours of operation. (b) Report Not later than 180 days after the date of the enactment of this Act, the Commissioner shall submit a report to Congress that summarizes the results of the study conducting pursuant to subsection (a). 5. Authorization of appropriations There are authorized to be appropriated such sums as may be necessary to carry out this Act.