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But Durham is still at work, looking at early aspects of the FBI investigation into the campaign. His relatively opaque investigation has now lasted longer than former special counsel Robert Mueller’s investigation into Russian interference in the 2016 election and prosecution of dozens of Russians and Trump advisers.
Investigators with Durham’s office — having been delayed by pandemic restrictions last year — are now arranging witness interviews, according to people familiar with the probe. Grand jury subpoenas also were being used to gather documents in recent months, the sources said.