President Trump is making good on the promises he made to his voters.
Schiff is saying that a President who goes against the wishes of the Deep State to deliver on campaign promises to the voters is really abusing the office for personal benefit.
Here is the Hamilton quote about the impeachment trial in the Senate worth repeating:
...the decision will be regulated more by the comparative strength of parties, than by the real demonstrations of innocence or guilt... the most conspicuous characters in it will, from that circumstance, be too often the leaders or the tools of the most cunning or the most numerous faction...
Schiff is the cunning tool that Hamilton spoke of.