Rosenstein and Grassley sat down in Grassley’s Senate office for nearly an hour. Afterward, the Iowa Republican declined to say whether they had come to an agreement.
“We’ve had some issues, and we discussed those issues,” Grassley told CNN. “It was a very friendly meeting.”
Grassley said last week he was preparing subpoenas for the two senior FBI officials the Justice Department is preventing the committee from interviewing.
A source familiar with the matter told CNN a resolution was not reached in the dispute over the FBI officials, but the two sides agreed to keep talking.
Rosenstein declined to comment on the meeting as he left the Capitol.
“Why now? Why was the FBI so focused on keeping Congress in the dark? Why is it so afraid of shining the light of day on the controversial decisions Mr. Comey made in the months before he was fired?” Grassley said at a Tuesday hearing on two bills to protect Mueller from being fired.
During the same hearing, Grassley asked the constitutional experts testifying about the prospect that Rosenstein might have to recuse himself from the Mueller probe because he testified as a witness in the investigation.
“According to recent press reports, Deputy Attorney General Rosenstein has been interviewed as a fact witness,” Grassley said of Mueller’s probe. “Do you believe that poses a conflict of interest and should Deputy Attorney General consult the ethics professionals at the Department of Justice about the issue?”
CNN’s Evan Perez contributed to this report.