Briefing
OCC Acting Comptroller Brian Brooks issued interpretive letters permitting national banks to custody crypto and use stablecoins for payment settlement. Congressional Democrats challenged the legal basis then as now, but no reversal was enacted, establishing a precedent that OCC crypto-permissive actions survive political opposition without explicit legislation.
The OCC granted Anchorage Digital a national trust bank charter, the first crypto-native firm to receive one. Subsequent legal challenges did not succeed in voiding the charter, providing the template that the nine firms now rely on as precedent.

Minnesota's August 1 law granting state banks explicit crypto custody authority compounds the federal charter story: as state-level frameworks expand, the OCC's federal charters become the higher-prestige but contestable pathway, making the Warren challenge more consequential for firms that chose federal over state licensing.

South Carolina's near-unanimous pro-crypto legislation, signed the same week Warren's letter circulated, illustrates the legislative bifurcation: state governments are actively lowering barriers while one senator attempts to raise federal ones, creating a fragmented compliance map that advantages firms holding OCC charters over those relying on state-by-state licensing.
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