Dreamers: an immigrant generation's fight for their American dream by 
Family Activism: immigrant struggles and the politics of noncitizenship by 
Immigrant Rights in the Shadows of Citizenship by 
Those Damned Immigrants: Americas Hysteria over Undocumented Immigration by 
Undocumented: How Immigration Became Illegal by 
The Undocumented Americans by As previously noted, the Congressional Research Service is an excellent, reputable source of information about topics of national importance. When searching information about undocumented immigrants, please use the search term " Unauthorized Immigrants.: There are many reports of probable interest, but I suggest starting by taking a look at the document Unauthorized Immigrants: Frequently Asked Questions.
When researching the Deferred Action for Childhood Arrivals program, search the program's full name as well as DACA. The results will be somewhat different.
Dear America: notes of an undocumented citizen by 
Illegal: reflections of an undocumented immigrant by About the Pew Research Center
"Pew Research Center is a nonpartisan fact tank that informs the public about the issues, attitudes and trends shaping the world. We conduct public opinion polling, demographic research, content analysis and other data-driven social science research. We do not take policy positions."
The Pew Center has conducted many public opinion polls and other demographic research related to immigration, also specifically to undocumented immigration. Here are a few example:
Unauthorized Immigration: There are several reports linked to this page.
Industries of Unauthorized Immigrant Workers
Americans Remain Critical of Government's Handling of Situation at U.S.-Mexico Border
