american farmers can hire foreign nationals under the program as long as they follow strict provisions which include only hiring them after trying to employ americans first. which this farm owner did. and got no takers. the idea is we have this chain here and we ll be taking these watermelons, putting them on this bus and we ll be doing it for hours straight. reporter: dustin blank is a farmer and also represents other farms when selling finished product to stores. i own two farming operations. reporter: and you represent how many farms? over 30. reporter: how many u.s. citizens do you know of who work on any of those farms? short of management, zero. reporter: under h 2 a, guest workers can t get paid less than americans. florida s minimum h 2 a salary is $14.33 an hour and at this farm the mexicans are permitted to work for as many hours as they want with extra bonuses for