Washington, Aug 8 (TIWN) A top US intelligence official has warned that China, Russia and Iran were trying to influence the upcoming American presidential election scheduled to be held on November 3, according to an official statement.

Foreign countries are trying to sway voter preferences, change US policies, “increase discord” in the country “and undermine the American people’s confidence in our democratic process”, the BBC quoted William Evanina, head of the National Counter-intelligence and Security Center (NCSC), as saying in the statement released on Friday.

The counter-intelligence chief however added that it would be “difficult for our adversaries to interfere with or manipulate voting results at scale”.