MA S525

Prohibits "foreign-influenced corporations" from making independent expenditures, electioneering communications, contributions to independent expenditure PACs or ballot question committees, or spending on ballot measures

Defines a corporation as "foreign-influenced" if: a single foreign owner holds 1% or more ownership, multiple foreign owners hold 5% or more in aggregate, or a foreign owner participates in the corporation's U.S. political decision-making

Requires corporations making covered political expenditures to file a CEO-signed certification under penalty of perjury within 7 business days affirming they are not foreign-influenced

Mandates political advertisements include the disclaimer "Some of the funds used to pay for this message may have been provided by foreign-influenced corporations" unless top contributors certify their funds are not from foreign-influenced sources

Amends Chapter 55 of Massachusetts General Laws (campaign finance) by adding definitions for "foreign-influenced corporation," "foreign investor," and "foreign owner"