The attorney general made the announcement alongside Director of National Intelligence Dan Coats, as leaks continue to pile up under the Trump administration, and the president continues to be publicly irritated with them.

"In the first six months of this administration, DOJ has already received nearly as many criminal referrals involving unauthorized disclosures of classified information as we received in the last three years combined," Sessions said.

The attorney general said that the DOJ has tripled investigations into these leaks, adding he has "listened to career investigators and 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."