(Bloomberg) – The Trump administration's ongoing effort to undermine Obamacare triggered a lawsuit accusing the government of trying to financially starve two state-run health care programs that serve almost 1 million low-income Americans.

The U.S. Health and Human Service Department waited until a day before Affordable Care Act payments were due to notify New York and Minnesota by email that more than $1 billion in annual funding was being cut off, according to a complaint filed Friday in federal court in Manhattan.

New York Attorney General Eric Schneiderman called the state's health plan a "lifeline" for 700,000 residents. "The abrupt decision to cut these vital funds is a cruel and reckless assault on New York's families," he said in a statement.