As long as Republicans control the House of Representatives, he will never be impeached.
I'm repeating myself, because I've said this in probably half a dozen threads already, but I really can't emphasize enough how utterly cowardly the vast majority of congressional Republicans are. They are more afraid of losing a primary against an even further-right conservative candidate than in standing up to Trump. These guys, by and large, didn't express an ounce of moral courage against Trump when he was a candidate, they're sure as hell not going to say anything now that he's the president.