By CECILIA KANG THE NEW YORK TIMES

The Federal Communications Commission voted Thursday to restore regulations that expand government oversight of broadband providers and aim to protect consumer access to the internet, a move that will reignite a long-running battle over the open internet.

Known as net neutrality, the regulations were first put in place nearly a decade ago under the Obama administration and are aimed at preventing internet service providers such as Verizon or Comcast from blocking or degrading the delivery of services from competitors such as Netflix and YouTube. The rules were repealed under former President Donald Trump, and have proved to be a contentious partisan issue over the years while pitting tech giants against broadband providers.

In a 3-2 vote along party lines, the five-member commission appointed by President Joe Biden revived the rules that declare broadband a utility-like service regulated like phones and water. The rules also give the FCC the ability to demand broadband providers report and respond to outages, as well as expand the agency’s oversight of the providers’ security issues.

Jessica Rosenworcel, the chair of the FCC and a Democrat, said the rules reflected the importance of high-speed internet as the main mode of communications for many Americans.

“Every consumer deserves internet access that is fast, open and fair,” Rosenworcel said. “This is common sense.”

Broadband providers are expected to sue to try to overturn the reinstated rules. “This is a nonissue for broadband consumers, who have enjoyed an open internet for decades,” said Jonathan Spalter, the president of a broadband lobbying group, USTelecom.

The organization said it would “pursue all available options, including in the courts.”

In a letter sent to Rosenworcel this week, dozens of leading Republican lawmakers warned that regulating broadband providers like a utility would harm the growth of the telecommunications industry.

The core purpose of the regulations is to prevent internet service providers from controlling the quality of consumers’ experience when they visit websites and use services online.

When the rules were established, Google, Netflix and other online services warned that broadband providers had the incentive to slow down or block access to their services. Consumer and free speech groups supported this view.

There have been few examples of blocking or slowing of sites, which proponents of net neutrality say is largely because of fear that the companies would invite scrutiny if they did so. And opponents say the rules could lead to more and unnecessary government oversight of the industry.

“The internet in America has thrived in the absence of 1930s command-and-control regulation by the government,” said Brendan Carr, a Republican commissioner.

A decade ago, the potential new regulations prompted raucous demonstrations. At the time, telecom companies were losing business to online streaming services. Sites such as Facebook, Google and Amazon feared they would be forced to pay telecom companies for better delivery of their services.