Twenty Democratic-led states filed a lawsuit 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.

FEMA announced in April that it was ending the funding to eliminate “waste, fraud and abuse.” The program saved taxpayers more than $150 billion over 20 years, the plaintiffs said.

States allege the Trump administration illegally ended FEMA's BRIC program, halting billions in disaster mitigation funding and putting storm-prone communities at risk.