Here's the convincing evidence of the Russia collusion:
"In fact, according to the newly released US evidence, Papadopoulos was lying to the Trump campaign about the connections, influence, and significance of the three Russian contacts. It turns out, according to the FBI, that noone was related to Putin; the Russian contacts were unable to arrange an official invitation for either Papadopoulos or Trump to visit Russia, or even the Russian Embassy in London."
http://russia-insider.com/en/russia-thanks-fbi-investigation-manafort-gates-and-papadopoulos/ri21430