Open several new questions, one for each manufacturer: "Are manufacturer X's stationary shop tools made in the USA?" Less useful to the person asking, as it requires knowledge of which manufacturers produce such tools (and they are not the same ones that produce hand tools), but each answer could be specific. That would lead to a lot of very short questions, though. This therefore lends itself more to a community wiki, IMO, so all of the relevant information can be kept together.
As the asker of the original question, googling does not always produce good (or valid) results for this question, which is why I asked it in the first place. While there are lists which collect information about products made in the USA (one of which was linked in one of the answers), they do not typically include products which used to be made here (e.g., Delta). Given that buying used tools is a good way to get into woodworking, knowing I can get an old Delta table saw which was made in the USA is good information, even if I can't get a new Delta made in the US.