Republicans wants the FBI to request a court warrant to access NSA massive database.
FBI Director is not happy with that:
"A warrant requirement would amount to a de facto ban, because query applications either would not meet the legal standard to win court approval; or because, when the standard could be met, it would be so only after the expenditure of scarce resources, the submission and review of a lengthy legal filing, and the passage of significant time — which, in the world of rapidly evolving threats, the government often does not have." — FBI Director Christopher Wray