List of CFR Sections Affected (LSA) - "Proposed, new, and amended Federal regulations that have been published in the Federal Register since the most recent revision date of a CFR title."
PACER Service - "Provides on-line access to U.S. Appellate, District, and Bankruptcy court records and documents nationwide." See also RECAP, "a free extension for Firefox that improves the experience of using PACER...and shows you when free documents are available."