What do you mean he never did anything? He was a key reason for that amendment. Also his position on it wasn’t so static, just look at what Fredrick Douglass had to say about him. Lincoln was a key catalyst for helping to move the country forward on slavery and to say otherwise really feels like postwar Confederate speak. He wasn’t perfect, but I’d struggle to think of anyone else I’d take over him as president at that time.
This one doesn’t make any sense to me. Of course all of our electricity imports come from Canada, I suspect the other 15% is mexico cause I don’t know who else we even can import from. That said, probably most of these ‘imports’ are more like trades in that sometimes the nearest grid is across the border. I don’t think Canada is sending bulk power to the US consistently (maybe on certain days depending on hydro and renewables) and doubt a tarriff here would be nearly as big an impact as something like steel. I could be wrong though