Yes wolves can spread it.
Google it
Lots of research out about it.
Some folks say say wolves are cleaning the environment,while other say they spread through there fecal dropping.
Both are true to some extent.
Your second question about wolves from other states.
It's the same rabbit hole
They'd never admit they brought them here.
Doesn't matter how they got here,yes they could of brought CWD with them.
I'd Google it, definitely some interesting stuff in that rabbit hole.
Birds can also spread it ,and fly miles in one day.