Native Americans are mentioned in the US Constitution: Article 1, Section 8, for example, gave Congress the power to regulate commerce with foreign nations, among states “and with the Indian Tribes.”

Source: https://financialpost.com/pmn/business-pmn/what-to-know-about-australias-indigenous-voice-to-parliament-vote

There are state lawsuits coming their way including one by the California Attorney General that under the US Constitution must be heard by the US Supreme Court.

Source: https://japantoday.com/category/world/judge-in-trump-fraud-trial-imposes-gag-order-after-trump-lashes-out-at-clerk

The US Constitution is being erased.

Source: https://www.lewrockwell.com/2023/06/paul-craig-roberts/digital-revolution-corporate-medicine-and-infinitely-expanding-racism/

The US Constitution may allow him to act unilaterally.

Source: https://qz.com/debt-crisis-14th-amendment-joe-biden-kevin-mccarthy-1850460456