; and (B) in subsection (c), by inserting source of income, after handicap, ; (4) in section 806 ( 42 U.S.C. 3606 ), by inserting source of income, after familial status, ; and (5) in section 808(e)(6) ( 42 U.S.C. 3608(e)(6) ), by inserting source of income, after handicap, . (b) Prevention of intimidation in fair housing cases Section 901 of the Civil Rights Act of 1968 ( 42 U.S.C. 3631 ) is amended by inserting source of income (as defined in section 802), before or national origin each place that term appears. (c) Authorization of appropriations There is authorized to be appropriated to carry out this section $50,000,000 for each of fiscal years 2021 through 2030. 112. Fair market rent appeal (a) Definitions In this section: (1) Fair market rent The term fair market rent means the applicable fair market rental established under section 8(c) of the United States Housing Act of 1937 ( 42 U.S.C. 1437f(c) ). (2) Successful fair market rent appeal The term successful fair market rent appeal means a reevaluation of a fair market rent resulting in a revised fair market rent that is not less than 3 percent higher than the fair market rent for the preceding year. (b) Fair market rent appeal In the case of an appeal made by a public housing agency of a fair market rent established by the Secretary, the Secretary shall— (1) calculate and publish estimates of historical underfunding over the preceding 10-year period due to fair market rents that are below true market value