The activities of Trump adviser Carter Page, who has extensive business interests in Russia, have been discussed with senior members of Congress during recent briefings about suspected efforts by Moscow to influence the presidential election, the sources said. After one of those briefings, Senate minority leader Harry Reid wrote FBI Director James Comey, citing reports of meetings between a Trump adviser (a reference to Page) and “high ranking sanctioned individuals” in Moscow over the summer as evidence of “significant and disturbing ties” between the Trump campaign and the Kremlin that needed to be investigated by the bureau.