Standing Against Dirty Diplomacy Act or the SADD Act This bill amends the Export-Import Bank Act of 1945 to prohibit the Export-Import Bank from guaranteeing, insuring, extending credit, or participating in the extension of credit in connection with the purchase or sale of any good or service for a high carbon intensity project that: (1) is designed to generate electricity, and (2) if completed would produce at least 500 grams of carbon dioxide per kilowatt-hour of electricity generated by the project.