they, like all the other workers here, won't discuss their immigration status. if you're legal, you would usually seek a less punishing occupation. either way, taxes are taken out of all the paychecks. they each make a base rate of $64 for the day. after taxes it's about $45 for the eight hours. as the hours go by, the workers sing to help make time pass, take their minds off the heat. they're aware many people believe mexican immigrants take away american jobs, but over the years on this ranch -- [ speaking spanish ] >> reporter: i asked him how many americans he has seen in his 32 years in the field. he said zero. this is the man who does the hiring in these fields. for 15 years you've been hiring labor crews to do agricultural work. >> right. >> reporter: how many americans have been hired over the 15 or 16 years? >> none. not one. >> reporter: has one ever expressed interest? >> no. not to come and work in the