Coalition Including California, Arizona, and Nevada Sues Trump Administration Over Medicaid Work Requirements 

A coalition of 25 Democratic-led states and the District of Columbia, including California, Arizona, and Nevada, filed a federal lawsuit Monday challenging the Trump administration’s implementation of Medicaid work requirements enacted under the One Big Beautiful Bill Act (see below)

The suit, filed in U.S. District Court in Massachusetts, targets an interim final rule issued by the Centers for Medicare & Medicaid Services (CMS) on June 3, 2026. Critics argue the rule provides necessary guardrails for the work requirements while the suing states claim it unlawfully narrows exemptions for “medically frail” individuals and imposes excessive administrative burdens. 

The One Big Beautiful Bill Act, passed last summer, requires certain Medicaid enrollees aged 19 to 64 to engage in 80 hours per month of work, community engagement, or qualifying activities starting January 1, 2027. Congress included exemptions for those who are medically frail, have serious or complex medical conditions, or meet other categorical exclusions to protect vulnerable populations. 

California Attorney General Rob Bonta, a co-leader of the lawsuit alongside Massachusetts AG Andrea Joy Campbell and New Jersey AG Jennifer Davenport, joined Arizona Attorney General Kris Mayes and Nevada Attorney General Aaron D. Ford in the action. The plaintiffs allege the CMS rule exceeds statutory authority by tightening the definition of “medically frail” and adding new hurdles for exemptions. 

In a statement, Arizona AG Kris Mayes said: “Medicaid exists to protect the most vulnerable Arizonans, and this interim final rule unlawfully undermines that protection. It ignores the law and puts medically frail people at risk of losing the healthcare they depend on. Arizonans otherwise eligible for coverage shouldn’t lose access to their healthcare because of unnecessary red tape.” 

Nevada Attorney General Aaron D. Ford echoed similar concerns, stating: “Nevadans with serious medical conditions or disabilities rely on Medicaid as a critical safety net. This rule’s narrow interpretation and added bureaucracy threaten to strip coverage from those who need it most through paperwork alone. We will not stand by while federal overreach disrupts care for our most vulnerable residents and burdens our state systems.”

The states argue they were “blindsided” by the changes after months of planning based on prior CMS guidance. They face an August 31, 2026 deadline to notify beneficiaries and warn of potential financial penalties for noncompliance, claiming the rule violates the Administrative Procedure Act, ignores evidence from past work requirement experiments, and unconstitutionally coerces states. 

California’s expansive Medi-Cal program covers roughly one in three residents, including significant numbers of low-income and chronically ill individuals. Governor Gavin Newsom and state Democrats expanded the program to include illegal aliens, pushing the program to near insolvency. 

Arizona and Nevada, with growing populations and sizable rural and underserved communities, also rely heavily on Medicaid as a safety net. The three states highlight concerns that stricter rules could lead to coverage losses among working-age adults with disabilities, those in treatment for serious illnesses, or individuals facing barriers to documentation.

According to the coalition, earlier state experiments with similar Medicaid work requirements led to many eligible people losing coverage—not because they weren’t working, but because of bureaucratic red tape and paperwork challenges. They warn this could strain emergency rooms, increase uncompensated care costs, and burden safety-net providers—particularly in border and rural areas of the Southwest. 

The Trump administration and CMS Administrator Dr. Mehmet Oz have framed the work requirements as a commonsense reform to prioritize coverage for the truly needy, reduce dependency, identify and eliminate widespread fraud, and promote self-sufficiency. Supporters argue able-bodied adults should contribute where possible, and that clear guidelines prevent abuse of the program. 

The interim rule aims to define exemptions more precisely while giving states flexibility in implementation. Federal officials maintain the changes align with congressional intent in the One Big Beautiful Bill and will ultimately strengthen Medicaid’s fiscal sustainability.

The lawsuit seeks to block key provisions of the rule and have them vacated. It remains to be seen how the courts will view the challenge amid broader efforts to reform entitlement programs.

California Globe will continue monitoring this developing story and its implications for taxpayers and patients in the Golden State and across the Southwest.