I Was An Illegal Alien

Matt Welch writes:

If you glean one fact from the illustration, make it this: In an economically expansionary era in which 20 million jobs have been created in 15 years, unemployment hasn't once cracked 7 percent, and even the supposedly recessionary economy we're suffering through right now grew 1.9 percent in the second quarter of 2008, unskilled foreign workers are expected to fight over just 10,000 green cards a year. Restaurants and construction companies around the country have an exponentially higher demand for low-skilled workers, and laborers in Mexico have an insatiable desire for more money, but poorly conceived U.S. law prevents supply from meeting demand. That's one part of illegal I don't understand.