(2)The Secretary's determinations. Before any factual determination can be made concerning the availability of U.S. workers to perform particular job opportunities, two steps must be taken. First, the minimum level of wages, terms, benefits, and conditions for the particular job opportunities, below which similarly employed U.S. workers would be adversely affected, must be established. (The regulations in this part establish such minimum levels for wages, terms, benefits, and conditions of employment.) Second, the wages, terms, benefits, and conditions offered and afforded to the aliens must be compared to the established minimum levels. If it is concluded that adverse effect would result, the ultimate determination of availability within the meaning of the INA cannot be made since U.S. workers cannot be expected to accept employment under conditions below the established minimum levels. Florida Sugar Cane League, Inc. v. Usery, 531 F. 2d 299 (5th Cir. 1976). Once a determination of no adverse effect has been made, the availability of U.S. workers can be tested only if U.S. workers are actively recruited through the offer of wages, terms, benefits, and conditions at least at the minimum level or the level offered to the aliens, whichever is higher. The regulations in this part set forth requirements for recruiting U.S. workers in accordance with this principle.