If you want a good sense of how bad it is in the states here are two episodes of Freakomomics that do a job of exposing the issue.

“The Perfect Crime”: https://freakonomics.com/podcast/the-perfect-crime/ (From 2014)

Then a follow-up episode: “Why Is the U.S. So Good at Killing Pedestrians?”: https://freakonomics.com/podcast/why-is-the-u-s-so-good-at-killing-pedestrians/ (from July 2023)

Youre good! I use calibre to load ebooks from other sources to my kindle

This worked for me: Profile > Settings > Accounts > [Your Account Name] Edit Account > Clearing the password and re-entering it > Save > Reload App