In the year since the Federal Reserve raised interest rates to more than two-decade highs, it has succeeded in cooling an overheating US economy. But higher borrowing costs have also had some unintended effects. High-income households are benefiting from rising stock markets and home prices. Businesses are borrowing fast and consumers are continuing to spend. But in other ways, a year of high interest rates is finally starting to take its toll. Americans are looking for jobs for longer...