If the Iranian deal goes through, banks releasing frozen funds may have criminal penalties...

[healthmyths]

Lastly, Cruz wants the Congressional leadership to issue a formal warning to banks that are currently holding the billions in frozen Iranian assets that the deal would have to release to Tehran. They would be told that if they listen to President Obama and let the funds go to the Islamist regime they risk being hauled into court and face onerous civil and perhaps even criminal penalties once a new administration is sworn in.

Congress Must Fight to Reverse an Illegal Iran Deal

So consider the reality if you are bank holding these funds. They can be charged with aiding Iran, considered a terrorist nation

State Sponsors of Terrorism