WRAL: Fact check: Has the U.S. ever defaulted on its debt?

From WRAL:

Possible precedents for defaults

In a 2021 op-ed in The Hill, a political news outlet, Alex J. Pollock, a former Treasury Department official, argued that there are four precedents for U.S. defaults. Pollock cited cases of the U.S. Treasury: Resorting to paper money largely not supported by gold during the Civil War in 1862; Redeeming gold bonds with paper money rather than gold coins during the Great Depression in 1933; Not honoring silver certificates with an exchange of silver dollars in 1968; and Abandoning the Bretton Woods Agreement in 1971, which included a commitment to redeem dollars held by foreign governments for gold. Also, a 2016 analysis by the nonpartisan Congressional Research Service noted that in 1979, the Treasury failed to make on-time payments to some small investors because of technical glitches. Most were paid within days or a week. The research service concluded that although the temporary payment delays "inconvenienced many investors, the stability of the wider market in Treasury securities was never at risk." But multiple economic specialists agree that although these were notable episodes, they do not mirror the type of default to which Jeffries was referring.