Here's how the Senate's Trump-Russia probe stacks up to past investigations -- Business Insider

The Senate's main investigation into allegations of Russian meddling in the 2016 U.S. presidential election is equipped with a much smaller staff than previous high-profile intelligence and scandal probes in Congress, which could potentially affect its progress, according to sources and a Reuters review of public records. With only seven staff members initially assigned to the Senate Intelligence Committee's three-month-old investigation, progress has been sluggish and minimal, said two sources...
http://www.businessinsider.com/senate-intelligence-committee-trump-russia-probe-stalled-2017-4