Internal security legislation: Supreme Court decisions

Every U.S. Supreme Court decision from the 1946 through 2025 Terms that the Supreme Court Database classifies under the issue “Internal security legislation,” part of the First Amendment area.

Legal provisions most often involved

All 36 decisions, newest first

• Tiktok, Inc. v. Garland
  145 S. Ct. 57Decided January 17, 20259–0Per curiam
• Eric H. Holder, Jr. v. Humanitarian Law Project
  561 U.S. 1Decided June 21, 20106–3John G. Roberts Jr.
• Regan v. Wald
  468 U.S. 222Decided June 28, 19845–4William H. Rehnquist
• Haig v. Agee
  453 U.S. 280Decided June 29, 19817–2Warren E. Burger
• Kleindienst v. Mandel
  408 U.S. 753Decided June 29, 19726–3Harry A. Blackmun
• Bryson v. United States
  396 U.S. 64Decided December 8, 19696–2John M. Harlan II
• Schneider v. Smith
  390 U.S. 17Decided January 16, 19688–0William O. Douglas
• United States v. RobelLaw held unconstitutional
  389 U.S. 258Decided December 11, 19676–2Earl Warren
• United States v. Laub
  385 U.S. 475Decided January 10, 19679–0Abe Fortas
• Travis v. United States
  385 U.S. 491Decided January 10, 19679–0Abe Fortas
• Dennis v. United States
  384 U.S. 855Decided June 20, 19667–2Abe Fortas
• Albertson v. Subversive Activities Control BoardLaw held unconstitutional
  382 U.S. 70Decided November 15, 19658–0William J. Brennan Jr.
• United States v. BrownAltered precedentLaw held unconstitutional
  381 U.S. 437Decided June 7, 19655–4Earl Warren
• Zemel v. Rusk
  381 U.S. 1Decided May 3, 19656–3Earl Warren
• American Committee for Protection of Foreign Born v. Subversive Activities Control Board
  380 U.S. 503Decided April 26, 19655–3Per curiam
• Veterans of the Abraham Lincoln Brigade v. Subversive Activities Control Board
  380 U.S. 513Decided April 26, 19655–3Per curiam
• Aptheker v. Secretary of StateLaw held unconstitutional
  378 U.S. 500Decided June 22, 19646–3Arthur J. Goldberg
• Rabinowitz v. Kennedy
  376 U.S. 605Decided March 30, 19649–0Arthur J. Goldberg
• Killian v. United States
  368 U.S. 231Decided December 11, 19615–4Charles E. Whittaker
• Communist Party, U. S. A. v. Catherwood
  367 U.S. 389Decided June 12, 19619–0John M. Harlan II
• Communist Party of the United States v. Subversive Activities Control Board
  367 U.S. 1Decided June 5, 19615–4Felix Frankfurter
• Scales v. United States
  367 U.S. 203Decided June 5, 19615–4John M. Harlan II
• Noto v. United States
  367 U.S. 290Decided June 5, 19619–0John M. Harlan II
• Travis v. United States
  364 U.S. 631Decided January 16, 19616–3William O. Douglas
• Kent v. Dulles
  357 U.S. 116Decided June 16, 19585–4William O. Douglas
• Dayton v. Dulles
  357 U.S. 144Decided June 16, 19585–4William O. Douglas
• Rowoldt v. Perfetto
  355 U.S. 115Decided December 9, 19575–4Felix Frankfurter
• Yates v. United States
  354 U.S. 298Decided June 17, 19576–1John M. Harlan II
• Cole v. Young
  351 U.S. 536Decided June 11, 19566–3John M. Harlan II
• Communist Party of the United States v. Subversive Activities Control Board
  351 U.S. 115Decided April 30, 19566–3Felix Frankfurter
• Pennsylvania v. Nelson
  350 U.S. 497Decided April 2, 19566–3Earl Warren
• Carlson v. Landon
  342 U.S. 524Decided March 10, 19525–4Stanley F. Reed
• Harisiades v. Shaughnessy
  342 U.S. 580Decided March 10, 19526–2Robert H. Jackson
• Dennis v. United States
  341 U.S. 494Decided June 4, 19516–2Fred M. Vinson
• Osman v. Douds
  339 U.S. 846Decided June 5, 19504–4Per curiam
• American Communications Assn., C. I. O. v. Douds
  339 U.S. 382Decided May 8, 19505–1Fred M. Vinson

Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error