The debt was never recoverable
Ironically, Trump has the record for the highest deficit ever in US history. He's on track to beat it though and with a reasonably strong economy when he took office (again, not an ideal economy, underemployment is a major issue, but not a weak economy by any stretch).
hardly relevant comment since all presidents left and right have been pushing the button to increase deficits (and congress is completely responsible as well for not trying to balance the budget) so this is a systemic problem that will bring the downfall of America no matter what. It's just a matter of time, and with that level of debt, the time bomb keeps ticking faster and faster.