Senate panel requests info on Trump aides for Russia probe
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Top members of the Senate Judiciary Committee are expanding their probe into Russia's election meddling, asking for details on the communications of two Trump campaign aides.

Sens. Chuck GrassleyCharles (Chuck) Ernest GrassleyOn The Money: Inside the Mueller report | Cain undeterred in push for Fed seat | Analysis finds modest boost to economy from new NAFTA | White House says deal will give auto sector B boost The 7 most interesting nuggets from the Mueller report Government report says new NAFTA would have minimal impact on economy MORE (R-Iowa) and Dianne FeinsteinDianne Emiel FeinsteinDems reject Barr's offer to view Mueller report with fewer redactions Five takeaways from Mueller's report Only four Dem senators have endorsed 2020 candidates MORE (D-Calif.) — the chairman and ranking member of the committee, respectively — sent a letter to the Trump campaign asking for documents related to John Mashburn and Rick Dearborn.

"The Committee has determined that obtaining their responsive emails, or at least ensuring that adequate searches have been conducted that would cover these communications, is necessary for its investigative work," Grassley and Feinstein wrote.

They noted they are sending the request because they "believe information obtained in a recent Committee interview warrants expanding those searches to two additional custodians who were not included in the original effort, John Mashburn and Rick Dearborn."

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Mashburn, who currently serves as a deputy Cabinet secretary, worked as a policy director on the Trump campaign. Dearborn, who announced late last year that he was leaving the White House, also worked on the campaign and the transition team. 

The Senate committee has been looking into Russian interference in the 2016 election since last year.

Feinstein and Grassley noted they sent a letter in July 2017 asking for documents. So far, they said, the campaign has "provided over 28,000 pages of responsive documents, as well as letters detailing the 21 campaign custodians whose emails were searched and the more than 300 search terms used." 

Grassley, Feinstein and Sens. Sheldon WhitehouseSheldon WhitehouseHillicon Valley: Washington preps for Mueller report | Barr to hold Thursday presser | Lawmakers dive into AI ethics | FCC chair moves to block China Mobile | Dem bill targets 'digital divide' | Microsoft denies request for facial recognition tech Dems introduce bill to tackle 'digital divide' Senators press drug industry 'middlemen' over high prices MORE (D-R.I.) and Lindsey GrahamLindsey Olin GrahamHillicon Valley: House Dems subpoena full Mueller report | DOJ pushes back at 'premature' subpoena | Dems reject offer to view report with fewer redactions | Trump camp runs Facebook ads about Mueller report | Uber gets B for self-driving cars DOJ: Dem subpoena for Mueller report is 'premature and unnecessary' Dems reject Barr's offer to view Mueller report with fewer redactions MORE (R-S.C.) sent letters last year to the Trump campaign, the Trump Organization and Donald Trump Jr.Donald (Don) John TrumpIt is wrong to say 'no collusion' Nadler: I don't understand why Mueller didn't charge Donald Trump Jr., others in Trump Tower meeting Impeachment? Not so fast without missing element of criminal intent MORE, President TrumpDonald John TrumpTrump calls Sri Lankan prime minister following church bombings Ex-Trump lawyer: Mueller knew Trump had to call investigation a 'witch hunt' for 'political reasons' The biggest challenge from the Mueller Report depends on the vigilance of everyone MORE's eldest son, asking for a slew of information about potential contacts with Russian officials, attempts to obtain damaging information on Democratic candidate Hillary ClintonHillary Diane Rodham ClintonIt is wrong to say 'no collusion' 10 factors making Russia election interference the most enduring scandal of the Obama era And the winner of the Robert Mueller Sweepstakes is — Vladimir Putin MORE and a 2016 Trump Tower meeting with a Russian lawyer offering information on Clinton. 

They also sent letters at the time to Paul ManafortPaul John ManafortIt is wrong to say 'no collusion' The Hill's Morning Report - Is impeachment back on the table? Nadler: I don't understand why Mueller didn't charge Donald Trump Jr., others in Trump Tower meeting MORE — Trump's former campaign manager — and Glenn Simpson, whose Fusion GPS research firm commissioned the controversial "dossier" on Trump and Russia. 
 
Thursday's joint Grassley-Feinstein letter comes as the Judiciary Committee's probe into Russia's election meddling has grown increasingly fractured in recent months. 
 
 
Republicans, meanwhile, are digging into actions under the Obama administration, including the FBI's handing of its Russia probe and a separate investigation on Clinton's private email server.