What happens when inflation makes it impossible for the US to pay interest on their debt?

Based on the current estimates, around $16 trillion of the US debt is included as public debt. There are three conditions where the US government do more to reduce the amount of national debt. They are:

1. The economy has outreached its national debt.

2. The government has a lot to forgot by cutting public spending.

3. Raise in taxation.

Since 1929, the amount of national debt exceeded for the US economy. for example-

1934, the debt increases to 25 billion.

Feb 11, 2019, the public debt increases up to $22 trillion.

When the rate of inflation is greater than its neutral point, the economy could face unlimited problems. This makes a tough situation for the US government to pay its debt amount. When the government is failed to do so, it led to hyperinflation, higher unemployment, instability, etc.