I always figured these politician written books were just another way to funnel campaign money into their own pockets. Campaign or associated big donors & PACs buy thousands of copies of the books with campaign money. She must not have as much support as she though and her own campaign might be cash strapped.
Not in the US if you have a fixed rate mortgage, and most do. There’s tons of people who locked in rates at below 3% back in 2020-2021.