Pretty much this. If you're a Hollywood studio and you're employing gaffers and writers and set builders and what not up in Canada to film your stuff for the US market Trump is proposing a tariff to make the offshoring more painful.

That is what I would think would be the case. Unlike some of the other tariffs, a 100% tax on Canadian or European costs would probably make it cheaper to produce in the US. But, does the US still have enough infrastructure to produce that much material? Things get a lot more complicated when shooting outdoors, if you are particular about how things "look". Those "Star Wars" bits are going to be problematic, if the cost is prohibitive to move their posse to Tunisia, as they have in the past. "SG-1" used a couple sand pits near Vancouver to pose as desert planets, but you can't really get the sense of scale you can with a wide shot of a real desert. Maybe all the "Star Wars" action will move to Endor, so they can use the miles of forest in Oregon? DIS didn't seem to get hurt today, tho you would think their "franchise" properties that use location shots would be hurt.

Steve