CFR›Title 32›Subtitle B›Chapter XIX›Part 1907›Subject Group Action on Challenges ContainsSections 1907.21–1907.26CorpusDaily eCFRDisplayed edition2026-08-17Last updated2026-08-17 Sections 1907.21 § 1907.21 Exceptions. 1907.22 § 1907.22 [Reserved] 1907.23 § 1907.23 Designation of authority to hear challenges. 1907.24 § 1907.24. Initial determination. 1907.25 § 1907.25 Action on appeal of initial Agency determination. 1907.26 § 1907.26 Prohibition on adverse action.