"This report describes and analyzes annual appropriations for the Department of Homeland Security (DHS) for FY2018. It compares the enacted FY2017 appropriations for DHS, the Trump Administration's FY2018 budget request, and the appropriations measures developed in response. This report identifies additional informational resources, reports, and products on DHS appropriations that provide context for the discussion, and it provides a list of Congressional Research Service (CRS) policy experts whom clients may consult with inquiries on specific topics."
CRS Report for Congress, RL44927
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html