FILE - In this Nov. 14, 2017, file photo, Glenn R. Simpson, co-founder of the research firm Fusion GPS, arrives for a scheduled appearance before a closed House Intelligence Committee hearing on Capitol Hill in Washington. Sen. Dianne Feinstein, D-Calif., has released a transcript from an interview with Simpson, the firm that commissioned a dossier of allegations about President Donald Trump's ties to Russia. (AP Photo/Pablo Martinez Monsivais, File)