The Senate Judiciary Committee wants the Justice Department to hand over details on Michael Flynn's resignation as President Trump's national security adviser. 
Sens. Chuck GrassleyCharles (Chuck) Ernest GrassleyPavlich: The claim Trump let the mentally ill get guns is a lie Congress fails miserably: For Asian-Americans, immigration proposals are personal attacks Grassley, Dems step up battle over judicial nominees MORE (R-Iowa) and Dianne FeinsteinDianne Emiel FeinsteinLawmakers feel pressure on guns Feinstein: Trump must urge GOP to pass bump stock ban Florida lawmakers reject motion to consider bill that would ban assault rifles MORE (D-Calif.) — the top two members on the committee — sent a letter to Attorney General Jeff SessionsJefferson (Jeff) Beauregard SessionsUnder pressure, Trump shifts blame for Russia intrusion Overnight Tech: Judge blocks AT&T request for DOJ communications | Facebook VP apologizes for tweets about Mueller probe | Tech wants Treasury to fight EU tax proposal Overnight Regulation: Trump to take steps to ban bump stocks | Trump eases rules on insurance sold outside of ObamaCare | FCC to officially rescind net neutrality Thursday | Obama EPA chief: Reg rollback won't stand MORE and FBI Director James Comey asking for a briefing and documents tied to Flynn's resignation. 
"We request that individuals with specific knowledge of these issues from both the FBI and Justice Department brief Committee Members and staff," they wrote in the letter. 
They added that they also want copies of the transcript of Flynn's "intercepted calls and the FBI report summarizing the intercepted calls referenced in the media." 
The senators are asking that the briefing occur after lawmakers return from the week-long Presidents' Day recess. 
They added that their request for a closed-door meeting stems from reports that DOJ and the FBI were involved in the lead-up to Flynn's resignation. The DOJ reportedly warned the White House that Flynn may be vulnerable to blackmail by Russia.
"These reports raise substantial questions about the content and context of Mr. Flynn’s discussions with Russian officials, the conclusions reached by the Justice Department and the actions it took in response, as well as possible leaks of classified information by current and former government employees," Grassley and Feinstein wrote. 
Top GOP senators said this week that they also expect the Intelligence Committee to fold Flynn's resignation into its ongoing investigation of Russia's meddling in the U.S. election. 
Flynn resigned on Monday night amid reports that he discussed sanctions with Russia's ambassador before Trump's inauguration and then misled White House officials about the content of the calls.