President Donald Trump's decision to end a provision of the Affordable Care Act that lowered out-of-pocket medical costs brought swift reaction Friday from the states, as health officials and consumers said they feared the action could chase millions of Americans away from coverage.

Attorneys general in nearly 20 states said they planned to sue the Trump administration to keep the money flowing, contending that the president is not following a legal requirement to pay the subsidies.

"This is a president who seems set on enacting reckless, unlawful campaign promises no matter the harm to famili...