" economical driven" is simply another way of saying cheap skilled labor from the 3rd world. Companies like Bank of America are lobbying hard to open the flood gates of skilled labor visas. If you don't believe me there is an entire apartment complex in Charlotte full of computer analyst that are contracted by the Ta Ta corporation from India. They bring these people over for 6 months at a time, cram 6-8 in an apartment, and pay them 1/3 of what they used to pay a skilled American worker.
Both political parties are an abysmal failure. Democrats what to turn these people into a future constituency, the republicans want to appease the cheap labor lobby who want to exploit them for cheap labor. Here's another fun fact, culturally Hispanic aliens vote for whoever is giving out the bacon in their own countries. They are not, as a voting block, value voters.
Pat Buchanan has made the most articulate argument regarding this issue. He is absolutely correct when he says that America is no longer a country, but rather a "geographical expression" when you take into consideration the apathetic response to the current invasion.