From the Tax Professor Blog:
President Obama proposes to fund his health care bill in part by limiting the tax rate at which itemized deductions reduce tax liability to 28%:
The Administration proposes to limit the tax rate at which high-income taxpayers can take itemized deductions to a maximum of 28 percent, affecting only single taxpayers with income over $200,000 and married taxpayers filing a joint return with income over $250,000 (at 2009 levels). The proposed limitation would be effective for taxable years beginning after December 31, 2010.