(i) Occupations and professions set forth in Appendix 1603.A.1 to Annex 1603 of the NAFTA —(A) Research and design. Technical scientific and statistical researchers conducting independent research or research for an enterprise located in the territory of another Party.

(B) Growth, manufacture and production ( 1 ) Harvester owner supervising a harvesting crew admitted under applicable law. (Applies only to harvesting of agricultural crops: Grain, fiber, fruit and vegetables.)

( 2 ) Purchasing and production management personnel conducting commercial transactions for an enterprise located in the territory of another Party.

(C) Marketing. ( 1 ) Market researchers and analyst conducting independent research or analysis, or research or analysis for an enterprise located in the territory of another Party.

( 2 ) Trade fair and promotional personnel attending a trade convention.

(D) Sales. ( 1 ) Sales representatives and agents taking orders or negotiating contracts for goods or services for an enterprise located in the territory of another Party but not delivering goods or providing services.

( 2 ) Buyers purchasing for an enterprise located in the territory of another Party.

(E) Distribution. ( 1 ) Transportation operators transporting goods or passengers to the United States from the territory of another Party or loading and transporting goods or passengers from the United States to the territory of another Party, with no unloading in the United States, to the territory of another Party. (These operators may make deliveries in the United States if all goods or passengers to be delivered were loaded in the territory of another Party. Furthermore, they may load from locations in the United States if all goods or passengers to be loaded will be delivered in the territory of another Party. Purely domestic service or solicitation, in competition with the United States operators, is not permitted.)

( 2 ) Customs brokers performing brokerage duties associated with the export of goods from the United States to or through Canada.

(F) After-sales service. Installers, repair and maintenance personnel, and supervisors, possessing specialized knowledge essential to the seller’s contractual obligation, performing services or training workers to perform services, pursuant to a warranty or other service contract incidental to the sale of commercial or industrial equipment or machinery, including computer software, purchased from an enterprise located outside the United States, during the life of the warranty or service agreement. (For the purposes of this provision, the commercial or industrial equipment or machinery, including computer software, must have been manufactured outside the United States.)

(G) General service. ( 1 ) Professionals engaging in a business activity at a professional level in a profession set out in Appendix 1603.D.1 to Annex 1603 of the NAFTA, but receiving no salary or other remuneration from a United States source (other than an expense allowance or other reimbursement for expenses incidental to the temporary stay) and otherwise satisfying the requirements of Section A to Annex 1063 of the NAFTA.

( 2 ) Management and supervisory personnel engaging in commercial transactions for an enterprise located in the territory of another Party.

( 3 ) Financial services personnel (insurers, bankers or investment brokers) engaging in commercial transactions for an enterprise located in the territory of another Party.

( 4 ) Public relations and advertising personnel consulting with business associates, or attending or participating in conventions.

( 5 ) Tourism personnel (tour and travel agents, tour guides or tour operators) attending or participating in conventions or conducting a tour that has begun in the territory of another Party. (The tour may begin in the United States; but must terminate in foreign territory, and a significant portion of the tour must be conducted in foreign territory. In such a case, an operator may enter the United States with an empty conveyance and a tour guide may enter on his or her own and join the conveyance.)

( 6 ) Tour bus operators entering the United States:

( i ) With a group of passengers on a bus tour that has begun in, and will return to, the territory of another Party. ( ii ) To meet a group of passengers on a bus tour that will end, and the predominant portion of which will take place, in the territory of another Party.

( iii ) With a group of passengers on a bus tour to be unloaded in the United States and returning with no passengers or reloading with the group for transportation to the territory of another Party.

( 7 ) Translators or interpreters performing services as employees of an enterprise located in the territory of another Party.

(ii) Occupations and professions not listed in Appendix 1603.A.1 to Annex 1603 of the NAFTA. Nothing in this paragraph shall preclude a business person engaged in an occupation or profession other than those listed in Appendix 1603.A.1 to Annex 1603 of the NAFTA from temporary entry under section 101(a)(15)(B) of the Act, if such person otherwise meets the existing requirements for admission as prescribed by the Attorney General.

(5) Construction workers not admissible. Aliens seeking to enter the country to perform building or construction work, whether on-site or in-plant, are not eligible for classification or admission as B–1 nonimmigrants under section 101(a)(15)(B) of the Act. However, alien nonimmigrants otherwise qualified as B–1 nonimmigrants may be issued visas and may enter for the purpose of supervision or training of others engaged in building or construction work, but not for the purpose of actually performing any such building or construction work themselves.

(6) [Reserved]

(7) Enrollment in a course of study prohibited. An alien who is admitted as, or changes status to, a B–1 or B–2 nonimmigrant on or after April 12, 2002, or who files a request to extend the period of authorized stay in B–1 or B–2 nonimmigrant status on or after such date, violates the conditions of his or her B–1 or B–2 status if the alien enrolls in a course of study. Such an alien who desires to enroll in a course of study must either obtain an F–1 or M–1 nonimmigrant visa from a consular officer abroad and seek readmission to the United States, or apply for and obtain a change of status under section 248 of the Act and 8 CFR part 248. The alien may not enroll in the course of study until the Service has admitted the alien as an F–1 or M–1 nonimmigrant or has approved the alien’s application under part 248 of this chapter and changed the alien’s status to that of an F–1 or M–1 nonimmigrant.