Before revision:  We also propose a carbon border tax , either as a direct tax or a tax adjustment, applicable at national borders, based on MGHG-INT and MGDP . This carbon tax is supported by a proposed global Emissions Trading System (ETS) applied at the international level.
After revision:  We also propose a carbon border tax , either as a direct tax or a tax adjustment, applicable at national borders, based on MGHG-INT and IDHIGDP . This carbon tax is supported by a proposed global Emissions Trading System (ETS) applied at the international level.