What good is the HAVA Act if the laws aren't enforced?

With these links, you have the legal foundation:
-HAVA statutes (laws in the U.S. Code).
-EAC manuals (federal procedural standards).
-Accreditation pages (to verify VSTL status).

Accreditation of VSTLs
52 U.S.C. §20971 – Accreditation and revocation of Voting System Test Laboratories.
https://www.law.cornell.edu/uscode/text/52/20971

Voting System Standards
52 U.S.C. §21081 – Requirements for voting systems (auditability, accessibility, security).
https://www.law.cornell.edu/uscode/text/52/21081

EAC Quorum Requirement
52 U.S.C. §20923(c) – Establishment and quorum rules for the Election Assistance
https://www.law.cornell.edu/uscode/text/52/20923

EAC Testing and Certification Program Manual (Version 2.0)
Sets out procedures for accreditation and certification, including Section 3.6: Grant of Accreditation (Chairman’s signature required).
https://www.eac.gov/sites/default/files/eac_assets/1/28/Cert%20Manual%207%208%2015%20FINAL.pdf

EAC VSTL Program Manual (Version 2.0)
Defines the VSTL program, accreditation requirements, and procedures.
https://www.eac.gov/sites/default/files/eac_assets/1/28/VSTLManual%207%208%2015%20FINAL.pdf

Voting System Test Laboratories (Official EAC Page)
Provides the current status of accredited labs.
https://www.eac.gov/voting-equipment/voting-system-test-laboratories-vstl

State Requirements Manual (page 51) https://www.eac.gov/sites/default/files/TestingCertification/State_Requirements_for_Certification09042020.pdf

Voting System Test Laboratory Program Manual Version 2.0 (p 38-39) https://www.eac.gov/sites/default/files/eac_assets/1/28/VSTLManual%207%208%2015%20FINAL.pdf

VSTL Definition
https://www.eac.gov/voting-equipment/voting-system-test-laboratories-vstl

Pro V&V Certificate of Accreditation 2015-2017 https://www.eac.gov/sites/default/files/voting_system_test_lab/files/Pro_VandV_accreditation_certificate_2015.pdf