Did WSC v. FMC invalidate all of Part 541?

Sequence no
10
Slug
wsc-effect
Question
Did WSC v. FMC invalidate all of Part 541?
Answer
No. The D.C. Circuit set aside only §541.4; the remaining invoice-content, timing, and dispute provisions remained in place. FMC later codified §541.4 as Reserved in 90 FR 60579.
Provision slug
cfr-541-4

Source