US debt is fine as it is, and US will always be able to pay it (it can just print more money).<p>The issue is how much of the US government budget it takes to pay the interest, which is exploding right now as interest rate is 5%+, leaving a big bill for future generations.<p>This money comes from the same budget that contributes to medicare, social security, maintenance of roads etc.<p>The big bill for future generations isn't actually something the Americans will pay, but how its currency will weaken and lose its reserve status, as it will need to print more money.<p>Currency debasement has a lot of negative consequences, such as... huge inflation. Prices will go up.<p>Currencies of other countries will become stronger and the US is a country that is heavily reliant on imports, those imports will be more expensive for the average US American resident.<p>There are plenty of references of high debt in history, and the most recent ones happened in Latin America, check Argentina for example.<p>It went from being a rich country in the 60/70s to mass poverty Today, 50 years later, making its currency completely useless and now they are trying to kill the peso and just use the dollar, a currency they do not have the printing machine.<p>The dollar at some point might become a currency nobody would consider parking their money with, this has really negative consequences to the US, as having a stable currency is a pre-requisite for many investments.<p>For reference, the average PE ratio (price-to-earnings) for US companies are at least 2x of Brazil. Brazil has a somewhat stable currency(higher average inflation), but weaker than the dollar. People are less willing to invest in Brazilian companies because there's a currency risk.