AARP lobbied for the new health care law and now it stands to profit, Republican lawmakers charged Wednesday as they called for the IRS to investigate whether the powerful interest group representing older Americans should be stripped of its federal tax exemption.

Three veteran GOP representatives released a report that estimates the seniors lobby could make an additional $1 billion over 10 years on health insurance plans whose sales are expected to pick up under the new law. They also questioned seven-figure compensation for some AARP executives.

In a letter today to Rep. Lamar Smith (R-TX), chairman of the House Judiciary Committee, Robin Ashton of the Justice Departments Office of Professional Responsibility, wrote that her investigation found that in their handling of the voter intimidation case against members of the New Black Panther Party, senior career attorneys at DOJ "did not commit professional misconduct or exercise poor judgment, but rather acted appropriately."

The investigation also found "no evidence" that their decisions were improperly affected by political considerations or by the race of the defendants.

Gov. Scott Walker's administration is no longer collecting dues on behalf of state unions and as of Sunday began charging employees more for health care and their pensions, even though nonpartisan legislative attorneys say the changes are not yet law.

Administration Secretary Mike Huebsch said Monday administration attorneys have determined the law is now in effect. State workers will receive paychecks April 21 that reflect the changes, he said in a conference call with reporters.

Republican governor Rick Scott's push to privatize Medicaid in Florida is highly controversial—not least because the health care business Scott handed over to his wife when he took office could reap a major profit if the legislation becomes law.

Scott and Florida Republicans are currently trying to enact a sweeping Medicaid reform bill that would give HMOs and other private health care companies unprecedented control over the government health care program for the poor.