From the Introduction: "This report considers House and Senate measures on unauthorized childhood arrivals that have seen legislative action since 2001, focusing in particular on legislation considered in the 115th and 116th Congresses. It also discusses the related Deferred Action for Childhood Arrivals (DACA) initiative and DACA-related data. The material is presented chronologically to trace the development of legislative proposals on unauthorized childhood arrivals and highlight the interplay between legislative action on these measures and developments related to the DACA initiative."
CRS Report for Congress, R45995
Congressional Research Service: https://crsreports.congress.gov/