Why is the US in so much debt and does it matter?

US debt is on track to reach more than $50 trillion dollars over the next decade. https://www.aljazeera.com/program/counting-the-cost/2024/6/26/why-is-the-us-in-so-much-debt-and-does-it-matter?traffic_source=rss&feed_id=37512&_unique_id=667c7a73d5065