From the St. Petersburg Times:
Louis DeSipio of the University of California, Irvine, cautioned us that about half of illegal immigrants in the U.S. entered on short-term visas and then simply stayed. "Border enforcement does little to slow this flow," he said via e-mail. He added that he was "not yet convinced" that more enforcement at the border is reducing illegal immigration: "I think that the real test will be when the U.S. economy recovers, particularly the sectors that employed a high share of unauthorized immigrants in the last decade: construction, hospitality, light manufacturing, and household maintenance."
We'll give the Obama administration credit for increased resources at the border, but we're not yet ready to render a final verdict on this promise. We leave the rating In the Works.

For the full story, please visit http://www.politifact.com/truth-o-meter/promises/obameter/promise/286/se...