Arizona's tough new immigration law goes in to effect tomorrow. Employers found to be hiring unauthorized immigrants can have their business licenses revoked.

This editorial in the CSM makes the interesting observation that half of the nation's winter lettuce is grown in Arizona. Since an estimated 75% of farm workers in the US are unauthorized immigrants, if Arizona decides to vigorously enforce the new law, presumably we'll all feel it at the supermarket and in restaurants.

The optimist in me tells me that there may be a silver lining in measures like these. If Arizona succeeds in driving out unauthorized immigrants and the whole country pays a price, maybe that will finally give Congress the push it needs to finally establishing a guest worker program that allows employers to bring in needed workers through legal channels.