The simplest reason possible.
The people who are hurt by our country can SUE the government.
How would you like having a dozen people trying to get into the USA and being injured by your methods, then sueing us for the damages?? What, you think that a 30 Trillion national debt isnt enough of a challenge?? You want to make everyone who wants to come to america and gets hurt millionaires TOO??
Not to mention 99.999% of the people trying to come here are innocent people looking for a better life for themselves HERE, IN OUR NATION!
people who PERSECUTED, tortured, ETC. . .
Quote "MOST OF TODAY’S huddled masses come not from southern and Eastern Europe as they did in Ellis Island’s heyday, but from Latin America, Asia the Caribbean and Africa. The U.S. is in the middle of an immigration wave that rivals the one that began the 20th century. In 2000, 10.4 percent of the U.S. population was foreign-born, up from 4.7 percent in 1970. Some 26 million people have come to the United States since 1970, nearly a third of all the immigrants in the nation’s history, according to the Census Bureau."
From here:
http://www.msnbc.com/news/755837.asp
And by the way how much do you think it will cost for your plan to be implemented?? 6 BILLION?? 10 BILLION?? I know I DONT WANT TO PAY THAT!!