With regards to the gay marriage issue, this is how I, as a conservative, reconcile. COTUS Article IV Section I First Part requires each State to grant "full faith and credit" of whacko Massachusetts and California laws; therefore Congress needs to negate the offending acts for the other States via Article IV Section I Second Part.
An amendment ain't necessary.Full Faith and Credit shall be given in each State to the public Acts,
Records, and judicial Proceedings of every other State. And the Congress
may by general Laws prescribe the Manner in which such Acts, Records and
Proceedings shall be proved, and the Effect thereof.