Why would the FBI use such database? Why they omit CIA from the equation? Law only apply to the FBI? or we pretend laws exist to prevent agents from abusing i

Why would the FBI use such database? Why they omit CIA from the equation? Law only apply to the FBI? or we pretend laws exist to prevent agents from abusing it? Either way, this is another evidence of the massive global spying capabilities of the US and how easily accessible they are for their agents