Free Trade Meets Immigration?

The Washington Post describes the peculiar state of U.S. immigration laws, and the hurdles they place in front of a German physician who wishes to work in the United States. We seem to make it easy to come to the U.S. to harvest vegetables, and are on the verge of creating a "guest worker" program presumably so we can expand that immigration largesse to nannies, gardeners, construction workers, and similar occupations. Many of these workers and their families will pay substantially less in taxes than they consume in government services. Our President supposedly believes in free trade, and favors this liberalized immigration policy, so why is he advocating for immigration reform only at the bottom of the labor market?