U.S. national security adviser denies Russia boosting Trump reelection

U.S. President Donald Trump's national security adviser denied that U.S. intelligence officials have warned that Russia has been interfering in the U.S. presidential campaign to boost Trump's re-election chances."I haven't seen any intelligence that Russia is doing anything to attempt to get President Trump reelected," Robert O'Brien, who was appointed by Trump to the post in September, said in an ABC News interview to be broadcast on Sunday.