Start with high-confidence immigration & emigration law books, then narrow by subgenre or adjacent topics.
A Nation of Immigrants
John F. Kennedy
Separated
Jacob Soboroff
The Invisible Coup
Peter Schweizer
The Problem of Immigration in a Slaveholding Republic
Kevin Kenny
The Devil's Highway
Luis Alberto Urrea
Soldiers and Kings
Jason De León
In the Shadow of Liberty
Ana Raquel Minian
Undue Process
Julia Ainsley
Immigration Detention Inc.
Nancy Hiemstra, Deirdre Conlon
States of Grace
Donald Martin Carter
The Truth About Immigration
Zeke Hernandez
Banned
Shoba Sivaprasad Wadhia
U.s. Immigration and Citizenship
Allan Wernick
Overrun
Todd Bensman
Unsung America
Prerna Lal, Allegra McLeod