They’re called comforters and very common in many places. I rarely see duvets where I live. You just wash them periodically like anything else.
Bed bugs need to be introduced to the home from a source somewhere and a duvet cover won’t help if they are.


There is no specific appointment for the losing presidential nominee. They just lose and move on.
The idea with the US government is checks and balances between government branches. Congress and SCOTUS have some degree of power over the president and each branch can keep the other two in check. Historically it has worked well, but things have been changing quickly in the last 10-20 years, but especially with the two Trump admins.
The current situation with Trump is particularly different for a few reasons:
Trump has a perfect storm of control over the systems normally in-place to hold him accountable.
Once we have an administration ran by adults in power again, we’re going to need to seriously re-evaluate and update our system of checks and balances, or future administrations will continue to exploit these problems until the country rots and dies.