Kamala Harris says appointing Amy Coney Barrett to the Supreme Court would imperil health care and abortion rights.

Senator Kamala Harris warned on Monday of far-reaching consequences to American society if Judge Amy…

Senator Kamala Harris warned on Monday of far-reaching consequences to American society if Judge Amy Coney Barrett is confirmed to the Supreme Court, saying that the health coverage and abortion rights were in peril.

In a speech in Raleigh, N.C., Ms. Harris amplified an argument that Joseph R. Biden Jr. has been making in the aftermath of Justice Ruth Bader Ginsburg’s death, putting a focus on the fate of health care for millions of Americans.

“This relentless obsession with overturning the Affordable Care Act is driven entirely by a blind rage toward President Obama,” Ms. Harris, the Democratic vice-presidential nominee, said. “And it’s happening at a moment when our country is suffering through the ravages of a pandemic that has claimed more than 200,000 lives in our country.”

The Supreme Court is scheduled to hear arguments a week after Election Day in a case challenging the Affordable Care Act, and the Trump administration is asking the court to strike down the law.

Ms. Harris also spoke of other issues at stake as President Trump tries to fill Justice Ginsburg’s seat, such as abortion rights and voting rights. The president, his party and Judge Barrett “have made clear that they want to overturn Roe v. Wade and restrict reproductive rights and freedoms,” Ms. Harris said.

“Judge Barrett has a long record of opposing abortion and reproductive rights,” she continued. “There is no other issue that so disrespects and dishonors the work of Justice Ginsburg’s life than undoing the seminal decision in the court’s history that made it clear a woman has a right to make decisions about her own body.”

Ms. Harris is a member of the Senate Judiciary Committee, which will hold confirmation hearings for Judge Barrett. That will place her at center stage in the confirmation process shortly before Election Day.

Mr. Biden has urged the Senate to refrain from confirming a replacement for Justice Ginsburg before the election, noting that voting is already underway. Ms. Harris echoed that argument on Monday and offered a message for voters.

“Let’s vote for health care,” she said. “Vote for the Affordable Care Act. Vote as if your life, your choice, depends on it, because it does. Make it clear to President Trump and to every Republican senator that if they’re determined to get rid of your health care, you’ll be just as determined to vote them out of office.”

At a round table event focusing on Black voters later on Monday, Ms. Harris called for a civil rights investigation by the Justice Department in the fatal shooting of Breonna Taylor by the police in Louisville, Ky. None of the three officers who were implicated in Ms. Taylor’s death during a botched drug raid in March were charged with homicide. One officer, who has since been fired, was indicted last week on three counts of wanton endangerment. He pleaded not guilty to those charges on Monday.

“It was a gut punch for all of us to hear that,” Ms. Harris said. “America has yet to value the sanctity of Black life and has yet to treat Black life as fully human.”

Ms. Harris said the Justice Department would play a more proactive role in a Biden-Harris administration in investigating policing practices and patterns, as well as enforcing consent decrees for law enforcement entities to remediate civil rights violations.