This headline says that the executive branch approved of the hacking of the legislative branch computers, but what the report really says is that the CIA informed the White House after the fact.
Effectively, the CIA has no oversight. They hack into legislative branch computers. They destroy evidence. They perjure themselves under oath. They do what they want with no concern about the executive approval pre- or post-. They simply inform.
At best they inform. All evidence suggests that in most cases they don’t inform. Not just the CIA/NSA, but also CBP. Unaccountable.