CFR›Title 32›Subtitle B›Chapter XIX›Part 1907›Subject Group Filing of Challenges ContainsSections 1907.11–1907.14CorpusDaily eCFRDisplayed edition2026-05-08Last updated2026-05-08 Sections 1907.11 § 1907.11 Prerequisites. 1907.12 § 1907.12 Requirements as to form. 1907.13 § 1907.13 Identification of material at issue. 1907.14 § 1907.14 Transmission. Previous Action on Challenges Action on Challenges Next General General