The great wall.

A Fox News/Opinion Dynamics poll indicated the American people favor a proposal to build a 2,000-mile security fence by a 51-to-37 percent margin. The total illegal alien population was estimated by Secretary of Homeland Security Tom Ridge at 8 to 12 million in December 2003, hut Lou Dobbs of CNN regularly uses 20 million as a more realistic number of illegal aliens in the US. The sea of illegal aliens provides a cover and an environment in which terrorists can hide, and the tide of in-coming illegal aliens provides terrorists with a reliable means of entry.
As long as the per-capita income differential between the US (over $30,000) and Mexico (less than $4,000) continues to be so wide, it will be difficult to stop immigrants. Mr. Bush's guest-worker proposal would create a legal means -- a renewable three-year work visa -- for new immigrants to enter the country and take jobs that Americans don't want. Illegal immigrants already living here would become eligible for guest-worker status after paying a fine.
Can you keep people from comming into our country by building a wall? No, you might slow them down but they still will come.
Take a look at of the walls that have been build over the centuries to keep people from moving from one country to another. The great wall of china comes to mind and many of the city states in Europe built walls, now the use for the walls are no long viable but the remains of the walls stand today in testimony of mans attempt to stop the flow of unwanted immigration.
In this country I hear people say if we don't stop the Mexicans from coming into our country in 50 years we will be a nation of Hispanics. Our language will be Spanish and all the Anglo Saxons
will be gone.
That sounds like the things the Indian tribes were saying on the east coast 200 years ago.