Today, September 11, 2026, marks the 25th anniversary of the September 11 attacks. President Trump proclaimed it Patriot Day, 2026, calling for flags to be flown at half-staff in honor of the 2,977 victims. Congress marked the anniversary with its own paper trail this week: H.Res. 1525, recognizing September 11 as a National Day of Service and Remembrance, was referred to the House Oversight and Government Reform Committee on September 10. Rep. Tom Kean Jr. (R-NJ) and Rep. Don Beyer (D-VA) introduced the 9/11 Legacy Preservation Act of 2026, which would direct the Library of Congress's American Folklife Center to build an oral history archive of survivor accounts. Kean also introduced, with Reps. Madeline Dean (D-PA), Mike Lawler (R-NY), and Bill Keating (D-MA), a bill awarding a Congressional Gold Medal to SEAL Team Six.

That flurry of commemorative and archival legislation is itself instructive. It's a small, current example of a much larger and longer-running phenomenon: for 25 years, and longer, attacks on American soil have produced legislative responses, but the type of response has varied widely, from sweeping new federal agencies to narrow reporting requirements that get reintroduced, unpassed, again and again.

Attacks on American soil started well before that horrific day, September 11, 2001. Below there are a few examples of these attacks to provide a brief explanation of each to better understand how these attacks shaped legislation today.

1987 — Anti-Terrorism Act. Generally cited as the first modern federal counterterrorism statute, this law was narrowly targeted: it barred the Palestine Liberation Organization from operating offices on U.S. soil. It did not create new federal agencies or broad surveillance authority.

1993 World Trade Center bombing. In February 1995, President Clinton introduced the Omnibus Counterterrorism Act of 1995, a response to the 1993 bombing. The bill stalled in the House.

1995 Oklahoma City bombing. Nine weeks after Clinton's bill was introduced, the Alfred P. Murrah Federal Building was bombed, killing 168 people. The stalled counterterrorism bill was revived and eventually passed both chambers as the Antiterrorism and Effective Death Penalty Act of 1996 (AEDPA), its final conference version cleared Congress on April 19, 1996, the exact anniversary of the bombing, and Clinton signed it five days later. AEDPA created a federal process for designating foreign terrorist organizations, criminalized financial contributions to them, and, separately from its terrorism provisions, imposed a one-year statute of limitations on federal habeas corpus petitions in death penalty cases, restricting the scope of judicial review available to state prisoners. Congress also passed separate legislation increasing physical security requirements around federal buildings following the bombing.

AEDPA is a useful complication for anyone tracing a clean line from "attack" to "law": its legislative origin predates Oklahoma City by two months, tracing instead to the 1993 WTC bombing. The Murrah bombing didn't create the bill, it created the political momentum to pass a bill that had already stalled.

September 11, 2001: the largest legislative wave:

No single event in this history produced more federal legislation than the September 11 attacks:

Biodefense funding tells its own story about scale: federal civilian biodefense funding went from roughly $1.4 billion in 2001 to $5.9 billion in 2002 and $11.9 billion by 2004, according to public-health researchers tracking the buildup.

What's notable about the two most prominent post-9/11 mass-casualty attacks in this history is what they did not produce: neither the 2013 Boston Marathon bombing nor the 2016 Pulse nightclub shooting in Orlando generated a new federal agency, a new surveillance authority, or an omnibus security law. Both did produce legislation, but of a different character.

2013 Boston Marathon bombing. The first legislative response came not as a new security authority but as an information-sharing fix: in May 2014, the House passed a bill requiring the FBI, DHS, and other intelligence agencies to review their procedures for sharing information with local law enforcement, after testimony revealed Boston Police had not been told of the FBI's prior 2011 investigation into bombing suspect Tamerlan Tsarnaev. Longer-term, survivor advocacy produced the Post-Disaster Mental Health Response Act, introduced by Rep. Ayanna Pressley in October 2021 and signed into law by President Biden in December 2022, nearly a decade after the bombing. It expands mental health support eligibility to survivors of FEMA-declared disasters and terrorist attacks generally, not just the 2013 bombing specifically.

2016 Pulse nightclub shooting. The FBI determined the attack, which killed 49 people, was motivated by homegrown violent terrorism. Congress's most substantive legislative product came in 2021: the National Pulse Memorial Act, designating the nightclub site a national memorial, introduced by Sen. Rick Scott and signed by President Biden. A House-passed version of that bill had stalled in the Senate the prior Congress. Beyond the memorial designation, Congress's recurring response has been commemorative, resolutions marking each anniversary have been introduced in the House and Senate in most years since 2017.

A bill that keeps not becoming law. One thread runs across multiple attacks in this more recent period: the Reporting Efficiently to Proper Officials in Response to Terrorism Act (REPORT Act), which would require DHS, DOJ, the FBI, and the National Counterterrorism Center to submit a public report to Congress within one year of concluding any U.S. terrorism investigation, identifying security gaps and recommending changes. A Senate committee report on an earlier version of the bill specifically cited the Boston Marathon bombing, the 2015 San Bernardino attack, and the Pulse nightclub shooting as examples of the information-sharing gaps the bill was designed to address. The bill has been introduced in the House or Senate in the 115th Congress (2017), 116th (2019), 117th (2021), 118th (2023), and 119th Congress (2025, as S. 848) and has not been enacted into law in any of those attempts. The Congressional Budget Office has estimated its cost at under $500,000 annually.

Lined up chronologically, these five episodes suggest legislative responses to attacks fall into a few recurring categories, not one:

The scale of the September 11 response — a new cabinet department, a new intelligence coordination structure, and a surveillance law significant enough to still generate reauthorization fights 25 years later, remains an outlier in this history rather than the typical case. Subsequent attacks, even ones causing dozens of deaths, have more often produced narrower, slower-moving, or purely commemorative legislation.

There have been many tragic events, and many more that were not noted above. While we may not be able to write down every tragedy, we do remember them all. While we all think back about that tragic day, where we may have been, what we may have been doing, and our first thoughts as we watched that horrific news; the one thing I do remember is the united nation across the country that supported the families that lost loved ones that day. I remember the brave first responders that were there to help those in need, and on this special day 25 years after, we should all take a moment to reflect. A special note out to those families who lost loved ones, friends, co-workers, the brave men and women who have lost their lives in the middle east, and even those who were impacted from the traumatic scenes of that day, we here the LegisLedger remember and are thinking about you today.