Arkansas in 2018 is the obvious comparison for H.R.1, and it is a valuable one. But treating the two as identical leads to bad planning. H.R.1 differs from the Arkansas waiver in several structural ways, and each difference changes either the scale of the risk or the tools available to manage it. Here are five that matter most.
1. Scale: one state versus the nation
Arkansas was a single-state waiver affecting a defined slice of one state's expansion population. H.R.1 is federal law applying across states. The same procedural failure rate that produced roughly 18,000 coverage losses in Arkansas, applied to a national population, translates into a far larger absolute number of eligible people at risk.
2. Permanence: waiver versus statute
The Arkansas program ran under a demonstration waiver that a court was able to halt. H.R.1 is statute. That changes the planning posture entirely. States are not piloting an experiment that might be paused; they are implementing a durable legal requirement on a fixed timeline anchored to the January 1, 2027 enforcement date.
3. A defined notice window
H.R.1 implementation includes an identified member-notice window, roughly June 30 to August 31, 2026, that gives planners a concrete date to organize around. Arkansas rolled out with comparatively little structured runway for member communication, which contributed to the low-awareness problem. The existence of a named window is an opportunity Arkansas did not have, but only if it is used for genuine outreach rather than a single mailed letter.
4. More developed data infrastructure
States today have more mature eligibility systems and data-matching capabilities than were widely deployed in 2018. In principle this allows more automated verification and exemption flagging, reducing the burden placed directly on members. Whether that potential is realized depends on whether the eligibility-system contractors build the exemption logic and data feeds in time.
5. Hindsight on the failure modes
The single biggest difference is knowledge. In 2018, no one had run a modern Medicaid work requirement at scale. Today, the Arkansas results, the one-in-four loss rate, the dominance of procedural over substantive disenrollment, the awareness gap, are documented. H.R.1 implementers are not flying blind. They know precisely which links in the chain broke last time.
That hindsight is the asset that most distinguishes 2027 from 2018. The failure modes are no longer a surprise; they are a checklist. Plans, states, contractors, and community organizations that build their outreach and verification systems around the known weak points have a realistic path to avoiding the Arkansas outcome. Those who treat H.R.1 as a fresh experiment are choosing to relearn the lesson the hard way.