Actually if you read the proposals of legalizing illegal immigrants...
#1 - you have to pay all your past taxes
#2 - you have to learn to speak english
#3 - if you have a criminal record, you can never become one
#4 - you will have a probation period (I've heard 7 years) to show that you are a good citizen; meaning no arrests, paying your taxes, etc...
Just the amount of tax money that will be collected could easily better fortify our borders.
"When fascism comes to America, it will be wrapped in the flag and carrying a cross." - Sinclair Lewis
"Those Who Would Sacrifice Liberty for Security Deserve Neither." -Benjamin Franklin