WASHINGTON — President Barack Obama pushed back against critics of his health care plan on Saturday with a stern warning that absent reform, costs will continue to rise and eventually devastate the U.S. economy.

The administration is trying to build momentum for its top domestic priority following a 14-9 vote this week by the Senate Finance Committee for legislation that would extend health care to millions of people who now aren’t covered by any insurance plan.

Democrats hailed the vote as a victory, in part because the bill was supported by a Republican, Maine Sen. Olympia Snowe. But the legislation faces considerable opposition with the health insurance industry, labor unions and large business organizations lining up against it for different reasons.

“The history is clear: For decades, rising health care costs have unleashed havoc on families, businesses and the economy,” the president said Saturday in his weekly radio and Internet address. “And for decades, whenever we have tried to reform the system, the insurance companies have done everything in their considerable power to stop us.”

Earlier this week, the health insurance industry released a study concluding that the Finance Committee bill — one of five competing House and Senate health care measures — would raise premiums significantly for millions of people who already have health coverage.

The report drew intense criticism from the White House, congressional Democrats and other advocates of the bill who deemed the study a last-ditch effort to sway public opinion against the White House-backed measure.

Obama said he would not abide “those who would bend the truth or break it to score political points and stop our progress as a country.” He accused the industry of “filling the airwaves with deceptive and dishonest ads,” sending money and lobbyists to Capitol Hill and paying for studies “designed to mislead the American people.”

The insurance industry responded Saturday, saying it supports a comprehensive, bipartisan overhaul of the system but that separate studies recently found that some of the existing proposals will increase significantly health care costs for families and employers.

“Reform needs to work and deliver on the promise made to the American people that everyone will have quality, affordable coverage,” Karen Ignagni, president of the industry group America’s Health Insurance Plans, said in a statement.

The bills moving through Congress generally would require most Americans to buy insurance, provide federal subsidies to help lower-income people afford coverage and help small businesses defray the cost of extending coverage to their workers.

The measures would bar insurers from denying coverage because of pre-existing medical conditions and limit their ability to charge higher premiums based on age or family size. Expanded coverage would be paid for in part by cutting hundreds of billions of dollars from future Medicare payments to health care providers.