Marijuana is only the second most interesting field of tax policy today.
BTAs for carbon excise taxes top it.
When we tax carbon emissions, we can tax our industry, but not foreign industry. BUT we can put on Border Tax Adjustments. Say a U.S. luxury automobile incurred $15,000 worth of carbon tax. We can tax its competitor vehicles. But no one knows how to. We did tax have BTAs for our chlorofluorocarbon or Ozone Depleting Chemicals tax, very specific ones, in currency per weight by category.
https://newrevenue.org/2017/10/03/border-tax-adjustments-for-carbon-taxes-the-odc-model/
So it can be done.
But for now, no carbon tax.