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Updates for May 21, 2026

The Office of the Federal Register updates the material in the eCFR on a daily basis. While we do not make updates in real-time, generally the eCFR is current within two business days.

You can learn more about how the eCFR is updated here.

Reader Aids

Reader Aids help people use and understand the eCFR. Reader Aids information is not published in the Code of Federal Regulations.

Effective regulations inserted from the above-dated Federal Register:
  1. 17 CFR 202
  2. 28 CFR 0
  3. 43 CFR 4
Regulations linked from the above-dated Federal Register:
  1. 9 CFR 310
  2. 30 CFR 917
  3. 43 CFR 3103
Regulations inserted that were previously linked and became effective on the date listed above:
  1. 50 CFR 665 Regulation at 91 FR 21266, Apr. 21, 2026