Internal Revenue Service, IRS.gov 'If you receive Letter 106-C about the Employee Retention Credit', irs.gov/coronavirus/if-you-receive-letter-106-c-about-the-employee-retention-credit, Page Last Reviewed or Updated: 27-Apr-2026 (saved September 27, 2026 as LAW-151) (Apr. 27, 2026) (Ex. LAW-151)
Internal Revenue Service, National Taxpayer Advocate blog, April 27, 2026 (updated May 1, 2026): 'Protect Your Employee Retention Credit Claim: Use IRS's New Streamlined Process to Request an Extension', taxpayeradvocate.irs.gov NTA Blog (Wayback capture 20260519230327); IRS 'Understanding your CP320B notice' page (Page Last Reviewed or Updated: 23-Apr-2026) (Apr. 27, 2026) (Ex. LAW-137)
Internal Revenue Service, Taxpayer Advocate Service FY2026 Objectives Report, Objective 6 (published February 11, 2026; updated May 29, 2026), taxpayeradvocate.irs.gov, Objective 6 status page (Feb. 11, 2026) (Ex. LAW-139)
Internal Revenue Service, GAO-26-107456, 'COVID-19 Relief: IRS Can Use Lessons Learned to Address and Prevent Improper Payments in Future Tax Programs' (February 10, 2026), GAO-26-107456, Highlights page; pp. 27, 30, 49 (PDF pp. 2, 32, 35, 54) (Feb. 10, 2026) (Ex. LAW-118)
Internal Revenue Service, GAO-26-107456, 'COVID-19 Relief: IRS Can Use Lessons Learned to Address and Prevent Improper Payments in Future Tax Programs' (February 10, 2026), GAO-26-107456, Highlights page; pp. 27, 30, 49 (PDF pp. 2, 32, 35, 54) (Feb. 10, 2026) (Ex. LAW-153)
Internal Revenue Service, IRS.gov 'Understanding Letter 105-C, Disallowance of the Employee Retention Credit', irs.gov/newsroom/understanding-letter-105-c-disallowance-of-the-employee-retention-credit; LAW-122 shows Page Last Reviewed or Updated: 27-Apr-2026; the live page saved September 27, 2026 as LAW-150 shows 21-Jul-2026 (July 21, 2026) (Ex. LAW-150)
