You have objected to a state’s right to keep slavery out, and you have objected to federal attempts to keep slavery out of the territories, even though state and federal bans on slavery were both in effect when the Constitution was ratified and even though both were universally accepted as legitimate at that time. You have also objected to every effort to advantage free labor over slave labor and to remove the advantages of using slave labor, so clearly you aren’t being entirely truthful.
Violation of the privileges and immunities clause. They can assure that no slaves are created through their own laws, but they have no right to infringe on other states laws to which they agreed to respect at the time of the ratification of the Constitution.
and you have objected to federal attempts to keep slavery out of the territories,
Inconsistent application of the law. If it's legal within the states, there is no justification for making it illegal in the territories.
even though state and federal bans on slavery were both in effect when the Constitution was ratified...
I assume you are referring to the Northwest ordinance here.
both were universally accepted as legitimate at that time.
If you mean the legality was not challenged at the time, that is a very different thing than "accepted." Given that there was no intent and no perceived benefit to taking slaves into the Northwest territories, there is hardly a reason for anyone to object to it other than the principle it attempts to establish, and a lot of people simply don't bother to object to things solely on principle.
You have also objected to every effort to advantage free labor over slave labor...
I am not sure what you mean with this comment. If you regard "advantage free labor" as meaning using the government to implement policies which were not agreed to in a democratic process, then yes, i'm against that.
and to remove the advantages of using slave labor,
By government manipulation to which not all parties have agreed? Yes, i'm against that.
so clearly you aren’t being entirely truthful.
Well you certainly present it that way, but it makes no sense to believe that any modern person favors slavery. Apart from us all being taught how evil it is, advocacy for it benefits no one in America, and only serves to excuse what China and other dictatorships are doing.