Russia has repeatedly denied the US allegations calling them absurd and characterizing them as an attempt to divert public opinion from revelations of corruption as well as other pressing domestic issues.
"We can say that we did not see evidence of the Russians altering vote tallies," Clapper stated.
The key findings in the classified and public versions of the recent US intelligence report on Russian hacking of the US 2016 election are the same, Clapper said.
"We can’t discuss the full range of all information that supports our conclusions because of the extreme sensitivity of these sources, but the key judgments in the public and classified versions are the same."
After receiving an intelligence briefing on the US Intelligence Community's report, Trump said the election outcome had not been affected. US House of Representatives Speaker Paul Ryan also suggested that the assessment should not be used by partisans to delegitimize Trump's presidency.
