By ANDREW TAYLOR and RICARDO ALONSO-ZALDIVAR Associated Press

WASHINGTON (AP) - Several million American workers will cut back their hours on the job or leave the nation's workforce entirely because of President Barack Obama's health care overhaul, congressional analysts said Tuesday, adding fresh fuel to the political fight over "Obamacare."

The workforce changes would mean nationwide losses equal to 2.3 million full-time jobs by 2021, in large part because people would opt to keep their income low to stay eligible for federal health care subsidies or Medicaid, the Congressional Budget Office said. It had estimated previously that the law would lead to 800,000 fewer jobs by that year.

Republican lawmakers seized on the report as major new evidence of what they consider the failures of Obama's overhaul, the huge change in U.S. health coverage that they're trying to overturn and planning to use as a main argument against Democrats in November's midterm elections.

It's the latest indication that "the president's health care law is destroying full-time jobs," said Republican Rep. John Kline of Minnesota, chairman of the House Education and the Workforce Committee. "This fatally flawed health care scheme is wreaking havoc on working families nationwide," he said.

But the White House said the possible reduction would be due to voluntary steps by workers rather than businesses cutting jobs - people having the freedom to retire early or spend more time as stay-at-home parents because they no longer had to depend only on their employers for health insurance.

The law means people "will be empowered to make choices about their own lives and livelihoods," said White House Press Secretary Jay Carney.

CBO Director Douglas Elmendorf said the top reasons people would reduce work would be to qualify for subsidized coverage and an expanded Medicaid program but that lower wages - because of penalties on employers who don't provide coverage and looming taxes on generous health care plans - would also be a factor.

The agency also reduced its estimate of the number of uninsured people who will get coverage through the health care law. The budget experts now say 1 million more people will be uninsured this year than had been expected, partly because of the website problems that prevented people from signing up last fall.

However, it wasn't all bad news for the Obama administration. The CBO's wide-ranging report predicted that the federal budget deficit will fall to $514 billion this year, down from last year's $680 billion and the lowest by far since Obama took office five years ago.

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Health care law to reduce labor participation - NBC40.net