To cut health-insurance premiums and protect Central Virginians with pre-existing conditions, U.S. Rep. Abigail Spanberger helped introduce legislation Tuesday to stabilize the Affordable Care Act.

Her bill would make health care more affordable, strengthen tax credits, steady the ACA marketplace, and stop insurance companies from selling junk insurance, Spanberger’s office said.

The Democrat representing Virginia’s 7th Congressional District cosponsored the legislation after the U.S. Department of Justice announced it will encourage courts to nullify the Affordable Care Act. On Tuesday, she spoke out against the Trump administration’s push to dismantle the healthcare law.

“Right now, Central Virginians need certainty—not the threat of a hyper-partisan, misguided lawsuit undermining their affordable coverage,” Spanberger said. “… [T]his bill reiterates our commitment to fight for our neighbors—not fight for special interests or the whims of a particular political party.”

The congresswoman is also working to lower high prescription-drug costs in Central Virginia, via a different bill that would enable the U.S. secretary of health and human services to negotiate drug prices in Medicare Part D.