Founder of Firm Behind Trump Dossier Vouched for It, Sources Say

  • House panel split on whether Glenn Simpson can be believed
  • Simpson wouldn’t say whether the FBI relied on the report

Glenn R. Simpson arrives for a House Intelligence Committee hearing on Capitol Hill in Washington, Nov. 14, 2017.

Photographer: Pablo Martinez Monsivais/AP Photo

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The founder of the firm that assembled a political dossier alleging ties between Russia and Donald Trump’s presidential campaign defended its credibility before a U.S. House panel, according to people familiar with his testimony.

Glenn Simpson, the founder of Fusion GPS, declined to answer, though, when asked whether the FBI had relied on the dossier in the early stages of its own investigation into Russian meddling in last year’s presidential campaign, said the people, who asked not to be identified discussing his 6 1/2 hours of testimony behind closed doors on Tuesday.