Well, people have been investigating Trump for a year or so. There doesn't seem to be anything there. Hillary, on the other hand, is plainly in felony violation of several federal laws, and it could even be argued that Comey could be charged with obstruction of justice over his mishandling of her investigation.
Are you aware of how long the investigation into Nixon went on for?
But before Trump could be impeached, wouldn't he have to be guilty of some crime? With what crime do you think he can be charged?
Collusion with a foreign government to hack a candidate and undermine the elections?https://www.youtube.com/watch?v=gNa2B5zHfbQ