Oswald's palm print found on a rifle hid on the 6th floor, the very floor multiple witnesses state shots were fired from (Williams and co.).
That isn't a compelling argument Oswald was involved?
Or is it a compelling argument Oswald was set up?
Or does it mean nothing?
Lt Day claims that he found a palm print on the rifle on Friday evening. The FBI, who examined the rifle within 24 hours after to murder, could find no trace of any kind of print on the rifle, so if Day had lifted a print, it would have been a 100% perfect lift, eliminating any possible remanence, which is highly unusual. Day didn't produce the palm print on an evidence card until November 26, thus reducing it's evidentary value to next to nothing.
So, no, it isn't a compelling argument that Oswald was involved.