They could ultimately have America's best interests at heart, however you can be certain that their public statements have no standard of truth and are made to serve a covert agenda.
That's a little different than a public DNI statement on behalf of 17 different agencies pointing to Russian attacks, corroborated by multiple other nations, in an era of wide-spread whistleblowing that would uncover a large-scale conspiracy.
Occam's Razor says all signs point to Russia.
I'm merely pointing out that we should question it when the U.S. government says "They did this!", as they've clearly tried to lie about it before in dire circumstances.
I wish I had more recent examples to give you, or examples that were actually executed on, however I think that'd be rather dangerous and impossible to obtain.
Or torturing Americans civilians for eh... testing whether interrogation techniques would work on the real enemy(tm) as well.