A new study shows that an increase of low-skilled workers is crossing the border between Mexico and the United States and indicates the economy is making a recovery. The increase in undocumented immigrants, over the first six months of 2012 has signaled that some sectors in the U.S. economy, which rely on workers that are low-skilled, have rebounded.

The study says that the population of undocumented immigrants has one again reached levels prior to the recession, which are estimated to by just less than 12 million. That figure, authors of the study say, show that new tough immigration laws such as the ones in Arizona and Alabama have had very little impact.

The study also revealed that people will move to where they can find work. The latest jobs report released by the federal government shows that in September 114,000 new jobs became available and most were in the transportation, warehousing, and healthcare sectors that often times employs a large number of minorities, including undocumented and legal, low-skilled immigrants.

The study said that even a small upswing in the need for labor from Mexico would cause an increase in the flow of undocumented immigrants into the U.S. even despite the new intensified efforts of law enforcement and the new immigration laws in states and cities throughout the south west.

The new study also says that even though there has been three consecutive years of employment above 8%, the overall size of the migrant population from Mexico has not contracted. Additionally, even though there have been record number of deportations and new immigration laws have been established it has not reduced the flow of undocumented immigrants crossing the border.