Iowa Code § 138.11: Access to camp for inspection.

The director may enter and inspect migrant labor camps at any reasonable time and may question persons, and investigate facts, conditions, practices, or any other matters as are necessary or appropriate to determine compliance with the provisions of this chapter and any rules made pursuant to this chapter, or in the formulation of any additional rules. The director may, to the extent appropriate, utilize the services of any other state department or agency or any local agency for assistance in inspections and investigations.