The FBI, CIA, and republican-led Senate Committee on Intelligence have all produced extensive volumes of documentation of Russian interference in the 2016 election.
If you're referring specifically to accusations of collusion between Trump and Russia, the core accusation was that he and his administration were playing the role of the useful idiot, being plied and influenced by Russia to the detriment of American interests.
The idea that he was intentionally working with Russia in a direct manner may has always been a misleading straw man.
The FBI, CIA, and republican-led Senate Committee on Intelligence have all produced extensive volumes of documentation of Russian interference in the 2016 election.
If you're referring specifically to accusations of collusion between Trump and Russia, the core accusation was that he and his administration were playing the role of the useful idiot, being plied and influenced by Russia to the detriment of American interests.
The idea that he was intentionally working with Russia in a direct manner may has always been a misleading straw man.