Sens. Chuck Grassley and Dianne Feinstein expanded the Senate Judiciary Committee Russia probe to two new Donald Trump campaign aides, the Washington Examiner reported.
The two aides are John Mashburn, the deputy White House Cabinet secretary who was the Trump campaign's policy director, and Rick Dearborn.
Dearborn has recently left the White House after being deputy chief of staff for legislative, intergovernmental affairs, and implementation. He was the executive director of Trump's transition team, the Examiner reported.
"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," The Hill reported.
Judiciary Chairman Grassley and Feinstein, the ranking Democrat on the committee, said that the Trump campaign has provided more than 28,000 pages of documents as well as letters that detail 21 campaign staff members, whose emails were searched with more than 300 search terms, the Hill reported.
The Thursday letter comes amid a division between what the Russia probe should be focusing on — Democrats want to focus on potential collusion between Moscow and the Trump campaign while Republicans want to focus on the FBI's handling of its Russia probe, the Hill reported.
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