This week Beto O’Rourke proposed a war tax as part of his 2020 campaign platform. Whether or not you’re for Beto in the primary, this is an idea worth considering.

In 2015, Gustavo Flores-Macias and Sarah Kreps asked the following question in a paper titled “Borrowing Support for War: The Effect of War Finance on Public Attitudes Towards Conflict”: “How does the way states finance wars affect public support for conflict?”

Here’s how they looked for answers to this question, as well as some of their conclusions.