Drug Decriminalization Debate Explodes

Two major studies now point in opposite directions on drug decriminalization, leaving Washington and Oregon families stuck in the middle of a deadly fentanyl wave while politicians fight over who to blame.

Story Snapshot

Overdose deaths surged after decriminalization in Washington and Oregon, but experts strongly disagree on whether the laws caused the spike.
A leading economics paper estimates more than 3,000 extra overdose deaths tied to decriminalization, while medical studies say fentanyl — not the law — drove the rise.
Most research finds decriminalization did not change fatal overdose rates once fentanyl and other factors are counted.
The debate shows how regular people pay the price while the system argues over models instead of fixing treatment, housing, and street drug chaos.

What Changed in Washington and Oregon

In early 2021, Oregon and Washington removed or sharply reduced criminal penalties for having small amounts of illegal drugs, promising more treatment and fewer lives lost. Oregon’s Measure 110 replaced arrests for possession with civil fines and offered treatment funding, while Washington’s Blake decision and follow-up laws made simple possession a low-level offense. These moves fit a wider shift away from the “war on drugs,” as many Americans on both the right and left grew tired of mass arrests that did not stop addiction.

At the same time, overdose deaths in both states climbed fast, especially from fentanyl, the powerful synthetic opioid that flooded street drug markets. Oregon opioid overdose deaths jumped from 280 in 2019 to 956 in 2022, showing a crisis already building before policymakers had solid data on their experiment. For many residents, the visible impact was stark: more public drug use, more tents on sidewalks, and more stories of families losing loved ones while local and federal officials argued over policy details.

The Study Saying Decriminalization Increased Deaths

A 2024 working paper from the National Bureau of Economic Research (NBER) uses a method called synthetic control to estimate what overdose deaths would have looked like if decriminalization had never happened. The authors find that, compared with these “what if” states, Oregon and Washington saw overdose deaths rise more after decriminalization than the models predicted. They estimate about 1,186 extra overdose deaths in Oregon and 1,895 in Washington between 2021 and 2023, and argue that decriminalization itself is the main reason.

Supporters of the NBER paper say this confirms what many residents feel when they see open drug scenes and rising deaths: that softer laws send the wrong signal and leave police, families, and neighborhoods powerless. Critics respond that the paper looks only at overdose numbers and arrests, not at whether treatment access improved or prison admissions fell. The paper also gives a strong, simple headline in a complex situation, which can be appealing for leaders looking for someone — or something — to blame when the drug crisis gets worse.

Medical Research Pointing at Fentanyl, Not the Law

Peer‑reviewed studies in medical journals tell a different story. A 2023 study in JAMA Psychiatry, led by researchers at New York University, used synthetic control methods to compare actual overdose deaths in Oregon and Washington with estimated deaths if the laws had not changed. They found no evidence that decriminalization increased fatal overdose rates in either state in the first year after the law changes. A follow‑up analysis by the same group also saw arrests drop without a clear rise in deaths tied directly to the legal shift.

Another study focused on Oregon’s Measure 110 and the rapid spread of fentanyl in the state’s street drug supply. Before accounting for fentanyl, the raw data showed a positive link between decriminalization and overdose rates. After researchers adjusted for fentanyl’s arrival as a confounding factor, the effect flipped and became statistically meaningless, leading them to conclude that Measure 110 itself did not change fatal overdose rates over two years. Brown University’s team similarly found the spike in deaths was driven by fentanyl, not by the decriminalization law.

Why Honest Experts Still Disagree

The tug‑of‑war between these studies is not a simple case of good versus bad science; it shows how fragile our policy tools are in the middle of a fast‑moving crisis. Different teams choose different comparison states, time windows, and math models. Some treat fentanyl as a separate force that must be adjusted away, while others treat it as part of the real‑world impact of any drug policy change. Depending on those choices, the same basic data can support either “decriminalization killed people” or “decriminalization did not change deaths in any clear way.”

So, did drug decriminalization increase deaths in Oregon and Washington? At @reason, Aaron Brown responds to @CharlesFLehman of @ManhattanInst and @CityJournal https://t.co/JhC3JfSNx8

— Nick Gillespie (@nickgillespie) July 24, 2026

For regular Americans, this feels like the usual pattern: the federal and state policy world produces complex studies while overdose deaths keep climbing and families keep burying loved ones. The evidence so far suggests decriminalization did not meaningfully change fatal overdose rates, once fentanyl and other forces are included. But it also shows that decriminalization did not deliver the promised drop in deaths, because leaders did not build strong treatment systems, housing support, or real accountability for street drug chaos. The result is a drug crisis used as a talking point while the “deep state” of agencies, experts, and politicians still fails to protect the people they claim to serve.