Why does the US Constitution seem to be AI generated

The US constitution and most parts of the Bible fail the test and most tools think they were AI generated. It's because these texts are so fundamental that they are overly-present in the training data. Not just that:

• Most formal writing appears AI generated.
• Text created by foreign writers also appears AI generated because most of them tend to be more calculated and formal in style.

Given the training data challenges and potential discrimination implications, it may be the case AI detection will never gain a lot of support.