Sixteen US states and the District of Columbia have filed a federal lawsuit challenging the suspension of two electric vehicle charging grant programs administered by the U.S. Department of Transportation.

The lawsuit alleges that federal agencies halted approval and distribution of funds authorized by Congress for EV charging and hydrogen fueling infrastructure. The challenged programs include approximately $1.8 billion under the Charging and Fueling Infrastructure Grant Program and about $350 million under the Electric Vehicle Charger Reliability and Accessibility Accelerator program.

According to the filing, the funding pause has placed more than $2 billion in previously awarded or pending grants at risk. The states argue that the suspension prevents state and local governments from advancing planned charging infrastructure projects.

The case follows earlier litigation over the $5 billion National Electric Vehicle Infrastructure program. A federal court previously ordered the release of funds to multiple states under that program after a separate funding pause.

The lawsuit seeks a court order requiring federal agencies to resume grant approvals and release obligated funds. The U.S. Department of Transportation has not issued a public response.