solutreans+skeletons?

There is no evidence to support transatlantic migration prior to Columbus. Even the Vikings only remained in Canada for one or two years. The supporter is probably referring to stone tools as artifacts. The theory is that people associated with the Solutrean culture migrated from Ice Age Europe to North America, bringing their methods of making stone tools with them, and providing the basis for the later Clovis technology found throughout North America. The hypothesis rests upon proposed similarities between European Solutrean and Early American Clovis lithic technology. But this association is is strictly speculative. As for skeletons that are europoid. I've never heard of any.