Attorney General Jeff Sessions has promised an administration-wide crackdown on leaks, announcing the FBI has formed a new team specifically focused on investigating potential leaks to the press.

Attorney General Jeff Sessions: “So, today, I have this message for our friends in the intelligence community: The Department of Justice is open for business. And I have this warning for would-be leakers: Don’t do it. I have listened to our career investigators, FBI agents and others, and our prosecutors, about how to most successfully investigate and prosecute these matters. At their suggestion, one of the things we are doing is reviewing policies affecting media subpoenas.”

On Twitter, Trump praised Sessions’ speech, writing, “After many years of LEAKS going on in Washington, it is great to see the A.G. taking action! For National Security, the tougher the better!” Trump’s new chief of staff, John Kelly, also warned staff over the weekend about leaks to the press—although his warning itself was promptly leaked.