[DocSportello]

Honest question: is it really so hard to manufacture these inserts in the US?

[MengerSponge]

No, not really. But the margins aren't great, and you've got to allocate the manufacturing capacity to make the paper, which takes time.

[WJW]

It's not hard but it's much cheaper to do it abroad, even after factoring in shipping.

[Cthulhu_]

Last or year-before-last's container shortage + Evergrande shook that one up though.

[elzbardico]

Once you did the initial capital investment, no.