Senator Cynthia Lummis has a plan for the US national debt. Buy Bitcoin, hold it for 20 years, and let appreciation do the heavy lifting. It is now a formal Senate bill with a co-sponsorship list and a floor hearing history.

Lummis made the case again on June 16, 2026, arguing that Bitcoin’s fixed supply and long-term price trajectory make it a credible fiscal tool, not just a speculative asset for retail traders.

What the BITCOIN Act actually proposes

The legislation, formally designated S. 954, directs the Treasury to acquire up to 1 million Bitcoin over a five-year period. That represents roughly 5% of Bitcoin’s total possible supply of 21 million coins.

Once purchased, the holdings would sit in a decentralized secure reserve for a minimum of 20 years. The structure is deliberately modeled on the gold reserves the US government already holds.

Lummis has modeled scenarios suggesting that a position of this size, held long enough, could reduce the national debt by somewhere between one-third and one-half. Her optimistic scenario: the debt disappears entirely, depending on Bitcoin’s price path over those two decades.

The national debt currently sits somewhere between $36 trillion and $39.2 trillion depending on the accounting period referenced.

Why this is gaining traction now

Lummis has been pushing versions of this proposal since 2024. She has tied the BITCOIN Act to companion legislation including the CLARITY Act, which aims to establish cleaner jurisdictional lines between the SEC and CFTC for digital assets.

President Trump’s executive order earlier in 2025 directing agencies to explore a national digital asset stockpile gave the concept political oxygen at the executive level, which in turn made Lummis’s Senate push feel less like fringe advocacy and more like policy coordination.

Several other countries have begun accumulating Bitcoin at the sovereign level, and Lummis has framed the reserve explicitly as a way to position the US as a leader in crypto adoption rather than a cautious observer watching from the sidelines.

What this means for Bitcoin markets and investors

A US government commitment to acquire 1 million Bitcoin would represent one of the largest single buyer mandates in the asset’s history.

The risks are real and worth naming. A government holding 5% of Bitcoin’s supply introduces concentration concerns and potential market manipulation questions that run in both directions. If the reserve were ever liquidated, the downward price impact would be severe. The 20-year minimum holding period is designed to address this, but legislative commitments have a way of getting revisited when political winds shift.