Earlier quoted context omitted.
Remind me what happens to a US citizen if our personal finances "struggle with fraud" and unaccountability to the tune of 40% when it comes to the IRS?
The money is not actually missing*. Oxfam attempted to add up all the numbers in various PDFs linked on the World Bank's website and got a total that's less than the headline figure in the World Bank's press releases. (See the actual report at https://oxfamilibrary.openrepository.com/bitstream/handle/10... ) Some of that is probably missing data and some of it reflects that headlines like "USA donates 1 billion" don'…
This analogy explains well but it's missing the important bit: private citizens don't have any requirement to save receipts. Charities and businesses do have that requirement.