Hispanic Coalition for Comprehensive Immigration Reform are an organisation that has been active since 2009 in order to promote reforms for immigration in particular to make it 'humane, just and reasonable'.
Their framework for their legislation is that while they support immigration they think it should be controlled more and increase Border Patrol. However they believe undocumented immigrants should be able to safely apply for citizenship, and states that it 'requires those who came or remained in the United States without our permission to register with the government. This will include passing a background check and settling their debt to society by paying a fine and back taxes, in order to earn probationary legal status, which will allow them to live and work legally in the United States.' After this probationary legal status is granted they are required to 'pass an additional background check, pay taxes, learn English and civics, demonstrate a history of work in the United States, and current employment, among other requirements, in order to earn the opportunity to apply for lawful permanent residency'.
I believe the way they are proposing to handle immigration is more sustainable especially for the economy and society as they are willing to help the immigrants, in many cases the language barrier is a problem and is addressed in Huntington's work as he fears a 'balkanisation' of America, but having the immigrants learn English and pass tests helps them assimilate into the new culture and language this could reduce hostilities by local communities towards them. It also provides for them a chance to be more educated/ better jobs which will help keep the American economy growing.
Anti - http://www.fairus.org/about
The Federation for American Immigration Reform formed in 1979 is a large organisation with 250,000 members and supporters - many of whom are conservative or liberal. And has regularly testified on immigration reforms in Congress. The organisation believes in reducing the amount of immigrants each year - 300,000 is preferred. And of course want to stop illegal immigration and improve border security. They are also of the view to stop amnesty for the millions undocumented as this is unfair. It is easy to understand their views as immigration does mean a strain on jobs/ healthcare/ education etc. And it may be in the best interests of the American nation to restrict large scale immigration, however many illegal immigrants already in the country may have worked for months and years which helps the US economy and so restricting their rights to become legal citizens is unfair.