Grover Norquist, the president of Americans for Tax Reform, who in 2006 called the governor a "serial tax increaser," stated recently, "Gov. Huckabee recognizes that the challenge is to rein in spending and reduce taxes." Huckabee supports the Fair Tax, which would do away with all federal taxes and replace them with a single national sales tax. In March 2007, Huckabee signed the Presidential Taxpayer Protection Pledge of Americans for Tax Reform, promising not to increase taxes at the federal level.