To use the old bullshit that everyone trots out whenever secrecy or privacy is mentioned.
It may be that there is nothing there but we won't know unless it is investigated properly.
You could claim that this, like the tax release and Trump's overall buffoonery, are diversionary tactics to dilute opposition to policies like tax cuts for the rich, healthcare, environmental cuts but he does not seem that devious. Or he is that smart and excellent at playing an arrogant and naive liar.
I don't know, he's going to have a tough time denying this Russian tie http://ow.ly/GVaz30bQToY