Twenty Democratic-led states filed suit Wednesday against the Federal Emergency Management Agency, challenging the elimination of a long-running grant program that helps communities guard against damage from natural disasters.

The lawsuit contends President Donald Trump’s administration acted illegally when it announced in April that it was ending the Building Resilient Infrastructure and Communities program. FEMA canceled some projects already in the works and refused to approve new ones despite funding from Congress.

“In the wake of devastating flooding in Texas and other states, it’s clear just how critical federal resources are in helping states prepare for and respond to natural disasters,” said Attorney General Andrea Joy Campbell of Massachusetts, where the federal lawsuit was filed. “By abruptly and unlawfully shutting down the BRIC program, this administration is abandoning states and local communities that rely on federal funding to protect their residents and, in the event of disaster, save lives.”

FEMA did not immediately respond Wednesday to a request for comment. It said in April that the program was “wasteful and ineffective” and “more concerned with political agendas than helping Americans affected by natural disasters.”

The program, established by a 2000 law, provides grants for a variety of disaster mitigation efforts, including levees to protect against floods, safe rooms to provide shelter from tornadoes, vegetation management to reduce damage from fires and seismic retrofitting to fortify buildings for earthquakes.