https://www.brookings.edu/articles/house-republicans-want-to-cut-the-irs-budget-again/
https://www.propublica.org/article/how-private-nonprofits-ultrawealthy-tax-deductions-museums-foundation-art
https://www.rijksoverheid.nl/binaries/rijksoverheid/documenten/kamerstukken/2022/04/04/joint-paper-eurogroup-es-nl/joint-paper-eurogroup-es-nl.pdf
http://www.bankofengland.co.uk/publications/Documents/speeches/2017/speech1001.pdf