; or (2) the authority of the President under the Atomic Energy Act of 1954 ( 42 U.S.C. 2011 et seq.), the Nuclear Non-Proliferation Act of 1978 ( 22 U.S.C. 3201 et seq.), the Energy Reorganization Act of 1974 ( 42 U.S.C. 5801 et seq.), or the Export Administration Act of 1979 ( 50 U.S.C. 4601 et seq.) (as continued in effect pursuant to the International Emergency Economic Powers Act ( 50 U.S.C. 1701 et seq.)) or any other provision of law relating to the control of exports. (h) Definitions In this section: (1) Export Administration Regulations The term Export Administration Regulations means subchapter C of chapter VII of title 15, Code of Federal Regulations. (2) In-country transfer The term in-country transfer has the meaning given to the term in the Export Administration Regulations. (3) Reexport The term reexport has the meaning given to the term in the Export Administration Regulations. (4) United States person The term United States person means any person subject to the jurisdiction of the United States. 1726. Export control enforcement authority (a) Authorities In order to enforce the provisions of the Export Administration Regulations under subchapter C of chapter VII of title 15, Code of Federal Regulations, issued under the authority of the International Emergency Economic Powers Act ( 50 U.S.C. 1701 et seq.) (pursuant to which the President has continued in effect authorities granted under the Export Administration Act of 1979 ( 50 U.S.C. 4601 et seq.)), the President shall delegate to the Secretary of Commerce, in addition to existing authorities, the authority to authorize any law enforcement officer of the Department of Commerce to conduct investigations (including undercover investigations) in the United States and in other countries when permitted under such countries' laws using all applicable laws of the United States. (b) Best practice guidelines The Secretary of Commerce, in consultation with the heads of appropriate Federal agencies, may publish and update best practices guidelines to