We'd be paying $10 for a head of lettuce.
Prove it.
There have been several studies showing the impact of illegal immigration on the price of lettuce.
Using a time-series of lettuce prices across the United States for 1973-2006, we regressed the price of lettuce against the rising levels of illegal immigration across different states. Using a stochastic process and a cross-sectional analysis applied to Gaussian distributions, we estimate the effects of illegal immigration on the price of lettuce in states with a high level of illegal immigrant migrant workers vis-a-vis states with a low level of illegal immigrant migrant workers. Our conclusion is that, adjusting for inflation, the price of lettuce in the United States would be $10.17 rather than the current average of $1.49 had all illegal immigration been stopped since 1973.
The National Bureau of Economic Research
Thats the same way they do those climate global warming studies isn't it?