Thus the mention of extradition treaties, which mean (to a loose approximation) that other countries agree to let some US rules get enforced on people in their borders.
In Terraform's case, it looks like they're in Singapore. Which the US does indeed have an extradition treaty with.
If you look closely at that statement, however, you can see that it's recursive and missing the base case: the rule which says "If they sold to the US investors they have to abide by US rules" is itself a US rule.