Each Federal department and agency which is empowered to extend Federal financial assistance to any program or activity . . . is authorized and directed to effectuate the provisions of section 2000d of this title with respect to such program or activity by issuing rules, regulations, or orders of general applicability which shall be consistent with achievement of the objectives of the statute authorizing the financial assistance in connection with which the action is taken.
Id. Section 602 then goes on to set out the method for approval and enforcement of Title VI regulations. Id.
Every person who, under color of any statute, ordinance, regulation, custom, or usage, of any State or Territory or the District of Columbia, subjects, or causes to be subjected, any citizen of the United States or other person within the jurisdiction thereof to the deprivation of any rights, privileges, or immunities secured by the Constitution and laws, shall be liable to the party injured in an action at law, suit in equity, or other proper proceeding for redress . . . .
Id. Justice Stevens in his dissent in Sandoval had raised the possibility of private parties using the express cause of action created by Congress in � 1983 to seek redress for violations of section 602 regulations. See Sandoval, 532 U.S. at 299300 (Stevens, J., dissenting).
To the extent that Title VI of the Civil Rights Act constitutes any provision of Federal . . . law within the meaning of Section 110(a)(2)(E), this CAA provision may provide EPA with both authority and responsibility to ensure that SIPs, including their permitting provisions, do not result in the kind of disparate environmental results Title VI condemns.
Lazarus & Tai, supra, at 633 (emphasis added).
When a challenge to an agency construction of a statutory provision . . . centers on the wisdom of the agencys policy, rather than whether it is a reasonable choice within a gap left open by Congress, the challenge must fail . . . . The responsibilities for assessing the wisdom of such policy choices and resolving the struggle between competing views of the public interest are not judicial ones . . . .
Id. at 866.