Open Borders is a website dedicated to promoting positive arguments in favour of open migration from Mexico and other countries to the United States. They are split into 6 main arguments; pragmatic benefits, philosophical arguments, tradition/precedent arguments, constitution/originialism argument, American exceptionalism arguments and general references for US-specific pro-immigration arguments. Through these headings they present strong cases from different contributors under these topics.
One of America's best established anti-immigration groups, 'FAIR seeks to reduce overall immigration to a level that is more manageable and which more closely reflects past policy. Reducing legal immigration from well over one million presently, to 300,000 a year over a sustained period will allow America to more sensibly manage its growth, address its environmental needs, and maintain a high quality of life.' One of their main arguments is that Americans are losing jobs to illegal immigrants who work for less pay. FAIR aims to bring in policies to restrict the numbers of people allowed to immigrate and tougher laws for illegal 'aliens'.