First, the overwhelming mountain of evidence is a lot of crap based on supposition. There are no actual facts to point to his connecting the two things together. But, even he had done such a thing, it still is not an impeachable offense. If he is found guilty and removed from office, the presidency becomes a mere extension of the congress, destroying the co-equal status of the Executive, rendering the Constitution void. That leaves us under a socialist/communist government with no freedoms except those allowed by an all powerful government.