I confused myself a bit there, because the systems are so different. Here with a parliamentary system, if the PM is no longer trusted, parliament would usually make a no confidence vote for the entire government.
The real problem is that even if the President is removed, the administration remains mostly the same, I assume that makes the vice president the new president. And the administration can continue the corrupt dealing.
So the whole administration needs to be impeached, so the new President becomes the majority leader of the senate, (I think is the person next in line after VP.) Who is then free to build a new administration, independent of the one the corrupt president had built.