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Confirm whether statutory text, regulations, or authoritative agency materials designate the Department of Labor as having primary interpretive and enforcement authority over Title I of ERISA.
The Department of Labor's Jan. 30, 2026 press release on its amicus brief explicitly states that the department "has primary authority to interpret and enforce provisions of Title I" of ERISA. That position is consistent with other DOL filings (e.g., Office of the Solicitor briefs) and DOL guidance, although DOL materials (EBSA Enforcement Manual) also explain that the IRS retains primary authority over certain tax-qualification/minimum-standards aspects of Title I (Parts 2 and 3) for qualified plans. Verdict: True — the Department of Labor did state it has primary authority to interpret and enforce Title I of ERISA, as shown in the DOL press release and other official DOL documents, while recognizing limited IRS responsibilities for tax/qualification matters.