DHS Final Rule on Public Charge: Overview and Considerations for Congress [Updated February 3, 2020] [open pdf - 652KB]
From the Document: "On August 14, 2019, the Department of Homeland Security (DHS) published a final rule that contains new regulations interpreting the public charge ground of inadmissibility in the Immigration and Nationality Act (INA). The regulations make it more likely that non-U.S. nationals (aliens) will not qualify to become lawful permanent residents (LPRs) due to their potential future use of public benefits. [...] This Legal Sidebar addresses legal aspects of the new public charge rule--specifically, how it changes the criteria for public charge determinations and, to a lesser extent, the ongoing litigation concerning the rule's legality. The Sidebar does not focus on the policy arguments for and against the rule."
CRS Legal Sidebar, LSB10341
Congressional Research Service: https://crsreports.congress.gov/