Too Big to Fail - is this an official government policy - where can it be found in written form?

"Too Big to Fail" is not an official government policy, but rather a concept that emerged during the 2008 financial crisis, referring to financial institutions whose failure could threaten the entire economy. While it reflects the government's approach to managing systemic risk, it is not codified in a specific legal document. However, it is referenced in various legislation and reports, such as the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010, which aimed to address the issues of large financial institutions and prevent future bailouts.