Let me expand on points raised in this thread. A great bulk of the internal conduct of the federal govt is governed by admin procedures, norm or laws that have no criminal penalties attached to them. The use of IRS/tax payer info is a major exception to that. The law envisions various ways ...
As expected, dispute appears to be over White House demands to break the law. These aren't 'disputes'. Law is clear on this. Only mystery is how it was that Long, a very Trumpy guy and not part of the ethics community, seems to have not gone along, or not enough.