U.S. Immigration

For immigration to the United States, their is an extensive process an immigrant must first go through.  They are required to do an interview as well as take a test.  This test is usually very hard to pass.  The questions include information about Congress, our national symbols, presidents, etc. This is a link to some of the questions http://usgovinfo.about.com/blinstst.htm.  To pass the Naturalization test an immigrant must pass by 60%.  Many polls have shown that U.S. citizens are unable to pass, which is ironic to say the least.
The U.S. Immigration blog site: http://www.us-immigration.com/blog/
Opinion piece on Naturalization: http://econlog.econlib.org/archives/2008/07/how_many_americ.html