system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How can a government go in and freeze someones account, especially when the person is a citizen of another country?
gpt
The government can freeze any account within a bank within its borders. The status of the citizenship of the owner of the account has no bearing on this, the bank follows the laws of the place it is located. 

Now, in the US they have to have a reason to freeze your account but that reason can be as simply as they are investigating you for a crime.