"Tennessee Reminds SCOTUS: Separation of Powers: Passes Resolution Calling Out Gay Marriage Decision"
This is as ignorant as it is ridiculous and wrong.
The issue has nothing to do with 'separation of powers.'
The issue concerns settled 14th Amendment jurisprudence accepted for well over 100 years prohibiting the states from denying persons residing in the states their right to due process of the law:
'[T]he Due Process Clause of the Fourteenth Amendment[...]declares that no State shall "deprive any person of life, liberty, or property, without due process of law." The controlling word in the case before us is "liberty." Although a literal reading of the Clause might suggest that it governs only the procedures by which a State may deprive persons of liberty, for at least 105 years, at least since
Mugler v.Kansas, 123 U.S. 623, 660-661 (1887), the Clause has been understood to contain a substantive component as well, one "barring certain government actions regardless of the fairness of the procedures used to implement them."
Daniels v. Williams,474 U.S. 327, 331 (1986). As Justice Brandeis (joined by Justice Holmes) observed, "[d]espite arguments to the contrary which had seemed to me persuasive, it is settled that the due process clause of the Fourteenth Amendment applies to matters of substantive law as well as to matters of procedure. Thus all fundamental rights comprised within the term liberty are protected by the Federal Constitution from invasion by the States."
Whitney v. California, 274 U.S. 357, 373 (1927) (Brandeis, J., concurring).
Planned Parenthood of Southeastern Pa. v. Casey, 505 U.S. 833 (1992)
Gay Americans have the fundamental right to access marriage contract law they're eligible to participate in, where the states may not seek to deny them that right for no other reason than who they are, predicated solely on an unwarranted animus toward gay Americans, their liberty protected by the Due Process and Equal Protection Clauses of the 14th Amendment.