The Post's recent series on Dick Cheney's vice presidency certainly got my attention. SNIPBut it wasn't until Jimmy Carter assumed the presidency that the vice presidency took on a substantive role. Carter saw the office as an underused asset and set out to make the most of it. He gave me an office in the West Wing, unimpeded access to him and to the flow of information, and specific assignments at home and abroad. He asked me, as the only other nationally elected official, to be his adviser and partner on a range of issues.SNIP Our relationship depended on trust,...