4th Amendment
190 Articles

“In Focus” Syllabus Supplements: ICE and CBP Operations in Minnesota and Other States (2025–2026)
This syllabus supplement offers curated articles intended to be combined with traditional casebooks in a law or higher ed classroom.

Free Speech, Immigration Law, and Truth Telling at UCLA Law’s Recent Federalist Society Event
An immigration expert considers questions that might have been asked at DHS General Counsel Percival's UCLA Law Federalist Society event.

Fencing with Fourth Amendment: Unpacking the Supreme Court’s Chatrie Decision
Chatrie stands as an important but narrow reaffirmation of the Supreme Court’s determination not to let technology overwhelm all privacy expectations in the digital age.

Fool’s Gold: Speaker Johnson’s Section 702 proposal would place no limits on backdoor searches
"Members can recognize the Johnson proposal for what it is: a transparent attempt to preserve the status quo rather than answer the bipartisan calls for needed reform."

Bogus “Antifa” Designations and FBI Warrantless Access to Americans’ Communications
"Any expert of national security surveillance law following the government’s escalating actions on “antifa” can connect the dots to FISA electronic surveillance."

Myths and Facts About Section 702 Backdoor Searches: A Reply to George Croner
A rebuttal to George Croner’s critique of the Brennan Center’s “Myths and Facts” on FISA Section 702 backdoor searches and why RISAA falls short.

The Truth Behind Section 702 Query Statistics
Authors write that Congress must now impose a warrant requirement for Section 702 access to Americans' communications.

A Response to the Brennan Center’s “Myths and Facts” on Section 702 Backdoor Searches
A warrant mandate is unnecessary, legally mistaken, and damaging to national security as the program faces expiration on April 20, 2026.

How Secretary Mullin Can Reform DHS
If Secretary Mullin is serious about reforming DHS, then he should consider the following list of suggestions, based on information provided by whistleblowers.

Claude and the Constitution: Questions Congress Should Ask Before Renewing Section 702
Experts share questions Congress, journalists, and the public should ask executive branch officials on surveillance authorities.

The Deeper Problem with ICE’s Arrest Warrants
DHS regulations do not ensure that ICE arrest warrants are supported by reliable probable cause findings. That failing poses significant Fourth Amendment risks.

ICE Administrative Warrants and the Fourth Amendment: A Response to the DHS General Counsel
DHS says ICE agents can enter homes to arrest noncitizens using administrative warrants, without judicial oversight. DHS's position has no legal basis.