A former Republican senator sounded the alarm on Tuesday after the U.S. notched a dubious mark.

The Washington Post reported on Tuesday that the U.S. debt is likely to hit $40 trillion this week, several months ahead of schedule, partly due to President Donald Trump’s invalidated tariffs. The report notes that the new debt arrived at a “perilous moment,” as inflation and rising geopolitical risk cause investors to flee from government bonds.

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Speaking to CNN’s Erica Hill, former Sen. Pat Toomey of Pennsylvania warned that the U.S.’s debt has become nearly unmanageable. That poses significant economic headwinds to future generations, he added.

“Republicans are in power right now. Is fiscal responsibility at this point a thing of the past?” Hill asked.

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Toomey’s answer was alarming.

“Well, if you look at what’s actually happened legislatively, yes,” Toomey said. “But it’s a thing of the future one way or another, because we can’t continue on this path of huge deficits, [and] mounting debt. At some point, something’s going to give, and it could be very ugly.”

The Post’s reporting suggests that the rising debt could tee up another fight in Congress next year over raising the debt ceiling.