Let's consider the implications:
- We have national shortages of doctors, nurses and all manner of technical professionals. For example, HMOs have squashed the profitability out of these careers. $60,000 is a lot of money, but for the work a nurse must do for years to reach that lofty number, it's almost better to get into sales, or something equally less messy and regimented. $60k for someone from the Philipines or Pakistan is a huge boon: for people with a work ethic, this means they can support entire extended families back home. That's not a slam: even accounting for the weak dollar, the standard of living in these countries is much lower than for the United States.
- Picking grapes or tomatoes is back-breaking work. For the extremely low pay proffered, only people who can't flip burgers, greet people at Wal*Mart, or wrangle carts at the grocery story would apply. To say nothing of the gas bill they'd incur just getting to and from the farms.