All told, the records of at least a dozen people tied to the committee were seized in 2017 and early 2018, including those of Representative Adam B. Schiff of California, then the panel’s top Democrat and now its chairman, according to committee officials and two other people briefed on the inquiry. Representative Eric Swalwell of California said in an interview Thursday night that he had also been notified that his data had been subpoenaed.
Prosecutors, under the beleaguered attorney general, Jeff Sessions, were hunting for the sources behind news media reports about contacts between Trump associates and Russia. Ultimately, the data and other evidence did not tie the committee to the leaks, and investigators debated whether they had hit a dead end and some even discussed closing the inquiry.
