Text: Accordingly, the legislation requires that agricultural employers recruit U.S. workers first, and that the terms of work offered foreign workers, when
Entailment: Legislation requires that agricultural employers try to recruit U.S. workers first and if they still need workers then can open up employment to foreign workers.
Contradiction: Legislation is not required to regulate employers to prevent large-scale moving of jobs overseas to foreign workers because companies will do the right thing and hire U.S. workers of their own volition.