At various points over the past two years, Internal Revenue Service officials targeted nonprofit groups that criticized the government and sought to educate Americans about the U.S. Constitution, according to documents in an audit conducted by the agency's inspector general. The documents, obtained by The Washington Post from a congressional aide with knowledge of the findings, show that on June 29, 2011, IRS staffers held a briefing with senior agency official Lois G. Lerner in which they described giving special attention to instances where "statements in the case file criticize how the country is being run." Six months later, the IRS applied a new political test to groups that applied for tax-exempt status as "social welfare" groups. On Jan. 15, 2012 the agency decided to target "political action type organizations involved in limiting/expanding Government, educating on the Constitution and Bill of Rights, social economic reform movement," according to the appendix in the IG report, which ... has yet to be released. The new revelations are likely to intensify criticism of the IRS, which has been under fire since agency officials acknowledged they had deliberately targeted groups with "tea party" or "patriot" in their name for heightened scrutiny. Sen. Susan Collins ... described the practice as "absolutely chilling" and called on President Obama to condemn the effort.