I'm working on a world (for a series of stories) not much different from our reality.
The laws are almost same to the letter - the timeline diverged ~2013 but with no important changes in the law.
What would, in such world, cause a change of both president and VP at once (or in very short time one from another)? Take into consideration that only non-violent measures allowed.
Research: Yes, impeachement is an option. But then can it happen to both officials (legally)? Are there maybe another options?
DISCLAIMER: This is not, in any way, about current USA administration nor about my likes or dislikes of one party or the other. It is an alternate reality story.