
In a freewheeling interview with the BBC, Central Intelligence Agency(CIA) director Mike Pompeo said China has much "bigger footprint" to carry out covert activities than Russia.
The CIA director had earlier said Moscow is expected to meddle in the 2018 US mid-term elections.
However, Pompeo expressed the hope that America will be able to hold a free and fair election.
The mid-term elections would be crucial for the Democrats as they will attempt to prise seats from the Republicans in the 435-member House of Representatives and 33 Senate seats in the Upper chamber.
President Trump's election in 2016 was marred with rumors about Russian interference intended to undermine Hillary Clinton's chances of becoming president.
Trump has however repeatedly denied he colluded with Russia to win the US elections.
Last week the US president had said he was willing to be interviewed under oath by former FBI director Mueller who is investigating alleged Russia meddling in the 2016 election.
"I'm looking forward to it," Trump had said, adding, that he would do it "under oath."