CBS NEWS: Conservatives are fuming as more damning information surfaces regarding the Internal Revenue Service’s targeting of tea party groups for excessive review of their tax-exempt status during the 2012 elections.An apology Friday by the IRS conceding the “inappropriate” practice of singling out groups with keywords like “Tea Party,” “Patriot” and “9/12 Project” in their names to flag for heightened, typically burdensome, scrutiny is “not sufficient reparation for violating the constitutional rights of United States citizens,” said Jenny Beth Martin, coordinator for the Tea Party Patriots.”The Tea Party Patriots rejects the apology from the Internal Revenue Service,” Martin said in a statement. “The IRS lied. They lied before Congress in 2011, and they lied again [in the agency’s apology]. We must know how many more lies they have been telling, and how high up the chain the cover-up goes.”According to a timline obtained by CBS News, the IRS began singling out tea party groups in the spring of 2010. Though the agency insisted Friday no high-level employees were aware of the targeting, a draft which surfaced over the weekend of an inspector general’s report due to be released this week revealed that Lois Lerner — an IRS official in charge of oversight of tax-exempt groups — knew about it as early as June 2011.IRS apologizes for targeting tea party organizations IRS targeted tea party groups earlier than 2012Lawmakers decry “outrageous” IRS conduct as targeting scandal deepens Lerner allegedly became aware of the targeting during a meeting two summers ago — 10 months before penning an April 2012 letter to House Oversight Chairman Darrell Issa, R-Calif., assuring him the rigorous scrutiny some conservative groups had complained about was “in the ordinary course of the application process” for nonprofit groups seeking tax exemption.One month earlier, in March 2012, then-IRS Commissioner Douglas Shulman told a congressional panel: “There’s absolutely no targeting.”House Ways and Means Committee Chairman Dave Camp, R-Mich., announced Friday that he would organize a hearing on the wrongdoing; Majority Leader Eric Cantor, R-Va., vowed to get to the bottom of it. Martin said she was “encouraged” by the GOP-controlled chamber’s promise to act, and added that the Tea Party Patriots “are currently working with our legal counsel to determine how to regain the tremendous amount of money, time, and other resources that were wasted and lost because of this violation by the IRS.”Attracting fury from Republicans and Democrats alike, the scandal gives recharged legs to the hands-off government network, which has seen a dip in influence since ushering into the Capitol a wave of freshman purists in 2010.