That means either a) making all clothes way more expensive for Americans, as our standards for labor and compensation are high compared to less developed countries, or b) lowering the standard of living in America such that we're forced to accept less pay for more labor.
Or C) deploying machines to do almost all of it (developing said machines if necessary). Which is more likely to actually happen than either A or B, even though the current regime is making it difficult. It also won't create very many jobs.
1) I was (temporarily) the only one still at the company who knew why it was there
2) I only knew myself because I had reverse engineered it, because the person who put it there had left the company
Now, some of those things had indeed become unnecessary over time (and thus were removed). Some of them, however, have been important (and thus were documented). In aggregate, it's been well worth the effort to do that reverse engineering to classify things properly.