Unauthorized Alien Students: Legislation in the 107th and 108th Congresses [Updated January 17, 2007] [open pdf - 1MB]
From the Summary: "Unauthorized alien students constitute a subpopulation of the total U.S. unauthorized alien population that is of particular congressional interest. These students receive free public primary and secondary education, but often find it difficult to attend college for financial reasons. A provision enacted as part of a 1996 immigration law prohibits states from granting unauthorized aliens certain postsecondary educational benefits on the basis of state residence, unless equal benefits are made available to all U.S. citizens. This prohibition is commonly understood to apply to the granting of 'in-state' residency status for tuition purposes. In addition, unauthorized aliens are not eligible for federal student financial aid. More generally, as unauthorized aliens, they are not legally allowed to work in the United States and are subject to being removed from the country at any time."
CRS Report for Congress, RL31365
Congressional Research Service: https://crsreports.congress.gov/