what are the views on restriction of immigration from all the parties (democratic, republican, and libertarian?)
Republican view sources:
http://www.google.com/search?hl=en&ie=ISO-8859-1&q=Republican+view%2C+immigration&btnG=Google+Search
Libertarian view sources:
http://www.google.com/search?hl=en&ie=ISO-8859-1&q=Libertarian+view%2C+immigration&btnG=Search
Democratic view sources:
http://www.google.com/search?hl=en&ie=ISO-8859-1&q=Democratic+party+view%2C+immigration&btnG=Search