Recently I came upon some interesting articles written by British guys covering some of the issues involved with mass immigration. These articles are excellent for defining some of the major issues of mass immigration and why some people on both the left and right support mass immigration.
The first article is entitled How Did Opening Borders to Mass Immigration become a Left-wing Idea?" and is written by Ed West of The Telegraph. The article discusses how mass immigration is viewed by the economic elite of society as beneficial, and why it's not beneficial for the working class.
The second article is now a classic on debunking the myths of mass immigration. It was written in 2003 by Anthony Browne in OpenDemocracy. The article is entitled The Folly of Mass Immigration. While it's a great article for countering the arguments in favor of mass immigration, I wince at the sections where he implies that the U.S, Canada, Australia and New Zealand were basically empty before European settlement and are now still capable of absorbing mass immigration.