Hardly silly, baseless, or irrelevant, your statement nonewithstanding. You see, the basis of your argument IS due process. It has been amply demonstrated that due process does not mean justice... which was the whole point of our legal system!
Your contention that Congress is interfering with a marriage is without merit. All Congress did was give jurisdiction on this case to the Federal court system. Who do you think organized and gave authorization to the inferior courts to begin with? Hint: it wasn't the Easter Bunny. It was Congress. The Constitution GAVE them the right to do so in Article I Section 1. Further, Section 2 of the same Article gives the power to the Judiciary in all cases in equity and in law. So, when Congress decided to let the Federal Courts review this case, it was perrmissable. I won't even begin to argue how the 14th Amendment is applicable in this case. We'd be here all day.
Replace Article I with Article III. Proofread!