They are not 100% risk less. US declared bankruptcy in 1933 and a state can claim that its bonds are not payable when it becomes bankrupt. However, under the current circumstances and the state of the economy in the US,one might argue that it might be among the bonds that can be considered as the less risky.
The Accounting and Finance Community
ARTICLES

Accrued Rent Income – Example With Journal Entries

When is Earned Revenue Reported?

Do You Pay Tax on Drawings From a Business?

Contingent Asset Accounting and Analysis

Accrued Revenue Accounting and Journal Entries

Accrued Expense Accounting and Journal Entries

Prepayments Occur When Payments Are In Advance
Thursday, January 28, 2021