https://docs.house.gov/meetings/JU/JU05/20220517/114776/HHRG-117-JU05-Wstate-LynnB-20220517.pdf
https://www.propublica.org/article/how-private-nonprofits-ultrawealthy-tax-deductions-museums-foundation-art
https://www.taxobservatory.eu//www-site/uploads/2023/10/global_tax_evasion_report_24.pdf