For the umpteenth time, Dred Scott was not a Fugitive Slave. Article IV had nothing to do with his case, and Taney never even claimed it did in his decision. In fact Taney ignored the first clause of Article IV by not overturning the Missouri Supreme Court ruling in which they stated that they were not bound to respect the laws of other states.
Semantics. I have no interest in splitting hairs with you. Seems like that’s all you people do.