As a percentage of GDP, government debt is high by historical standards, and it is rising at a fairly rapid pace. That could be a problem if it continues unabated. But there are two solutions: reduce spending and/or raise taxes. Most U.S. federal expenditure goes toward either defense, entitlements or interest on the debt, so it seems unlikely that spending will fall very much. That means higher taxes. At some point, the country will need to find a political reformer who can sell tax increases to the electorate. Until then, the crisis just continues to quietly grow.
[1] Giovanni Arrighi (1994) The Long Twentieth Century: Money, Power and the Origins of Our Times
https://www.amazon.com/Long-Twentieth-Century-Money-Origins/...