captioning sponsored by cbs >> pelley: three weeks to go. trump talks of winning-- >> i don't believe the polls anymore. >> pelley: and president obama? >> i'd advise mr. trump to stop whining. >> pelley: also tonight, is your face on file with the government? new questions about privacy. the opiod epidemic-- we catch up with jason on his long journey back. ck reporter: and you've been clean for how long? >> pelley: and, a barber who shapes young heads, and minds. >> do you know what wircumstance" means? >> no. >> what does circumstance mean? this is the "cbs evening news" with scott pelley. >> pelley: this is our western edition.