The facts dispute your statement. Do you have anything to back that up? Why hasn't the price of goods reduced with 20 million "guest workers" already here? Why are prices no higher in areas without much immigration? Remember there are 3.6 million visa overstays (above the illegal immigration count) roaming around this nation and no one knows where they are. With FTAA, we can only look forward to more of this:
What is a Colonia?
Texas Secretary of State's Definition: The term "colonia," in Spanish means a community or neighborhood. The Office of the Secretary of State defines a "colonia" as a residential area along the Texas-Mexico border that may lack some of the most basic living necessities, such as potable water and sewer systems, electricity, paved roads, and safe and sanitary housing.
In recent years the Texas-Mexico border region has experienced an explosion of growth in population and industrial activity. Although growth has resulted in economic opportunities, it has also intensified the environmental health and social challenges.
Among the border states, Texas has the largest number of colonias approximately 1,800 communities, with more than 500,000 residents. Sixty-five percent of all residents, and 85% of residents under the age of 18, were born in the United States. (aka Anchor babies) These Americans live in extreme poverty and often are unaware of the services that the United States and Texas can provide for them. Ninety-eight percent of the residents are Hispanic and speak little or no English.
(see photos - http://www-apps.niehs.nih.gov/outreach-education/News/spotarch/spot0503.cfm)
Welcome to the Colonias Home Page "One of government’s chief responsibilities is to help Texans with the greatest needs. The Secretary of State’s Ombudsman Program is a central part of our initiatives to assist needy Texans living in colonias. The program is helping to provide better roads, bring water and wastewater infrastructure to areas that lack these basic services, and improve the quality of life for some of Texas’ neediest citizens." - Governor Rick Perry
Most of the goods we import are made by cheaper labor from third world countries and hence we pay less for it.
The vast majority of the 15 millions illegal immigrants in the US do not want in the manufacturing sector.