; (3) in section 805, by inserting (as defined in section 208 of the Civil Rights Act of 1964), source of income, after sex each place that term appears; (4) in section 806, by inserting (as defined in section 208 of the Civil Rights Act of 1964), source of income, after sex ; (5) in section 807 ( 42 U.S.C. 3607 ), by adding at the end the following: (c) Nothing in this title shall be construed to— (1) prohibit an entity from providing housing assistance under section 8(o)(19) of the United States Housing Act of 1937 ( 42 U.S.C. 1437f(o)(19) ) in a nondiscriminatory manner; or (2) limit the ability of the owner of a dwelling to determine, in a commercially reasonable and non-discriminatory manner, the ability of a person to afford to purchase or rent the dwelling.