JW isn't required to make their donor list available the public.
IRS Issues New Form 990 Disclosure RegulationsAnnual Information Return
A tax-exempt organization is required to make available its annual information return (i.e., Federal Form 990 Return of Organization Exempt From Income Tax, or any version of Form 990 (e.g., 990-BL Informational and Initial Excise Tax Return for Black Lung Benefit Trusts or 990-EZ) and Form 1065 US Partnership Return of Income. Additionally, all schedules and supporting attachments, except for lists of contributions, gifts or grants received, also must be made available.