The Supreme Court is not an “agency” of the federal government but with the rest of the judiciary a co-equal branch charged with interpreting the law.
Of course, since it has the final say on what is or is not constitutional the opinions of others are just part of the process of determining constitutionality. The People have no say as to what a law means but has the ultimate say in making it say what they want it to say. This is why the Constitution has an amendment process.
If the Constitution cannot be amended to change it in the direction you wish then it stays the same.
You have to get out of the idea that YOU have the ultimate say on what is constitutional or not. You liking a decision does not make it valid nor disliking it invalid.
It appears to me that the states have abdicated their say about anything and only a minority of the People have a clue. Don’t expect much out of that situation.
The Founders established a representative republic based on an enlighted electorate which made up only about 15% of the population. Even Jefferson made noises about the dangers of democracy and the others staunchly opposed it.
I hope you won’t take this the wrong way, but are smoking something? No offense really, but you’re not making any sense. At least TRY to compose some coherent answers to my questions or take your marbles and go play somewhere else.