The inflexibility of American regulatory and trade policy might be the most important reason for the formula shortage

See The Baby Formula Crisis by David Leonhardt of The New York Times. Excerpt:

"Even as the industry seems to be under-regulated in some crucial ways, it may be overregulated in other, superficial ways.

This newsletter has covered ways that the F.D.A.’s bureaucratic inflexibility has hampered its Covid policy, and baby formula turns out to be another case study.

Many formulas sold in Europe exceed the F.D.A.’s nutritional standards, but they are banned from being sold here, often because of technicalities, like labeling, Derek Thompson of The Atlantic has noted. Donald Trump exacerbated the situation with a trade policy that made it harder to import formula from Canada. These policies benefit American formula makers, at the expense of families.

The inflexibility of American regulatory and trade policy, Thompson wrote, “might be the most important part of the story.”"