"The Russian collusion is conspiracy nonsense. If their was REAL evidence of it...it would have leaked by now." 

Any US intelligence agency with sound evidence that the president is compromised by a foreign power, is duty-bound to make that information known to all America's elected representatives, and in turn the public. (And if the agency doesn't do it, then leaky lips will do it for them.)

At the moment, the rumours of Trump's Russian ties are no more credible than the rumours that Barrack Obama wasn't born in the USA.