Outgoing U.S. Securities and Exchange Commissioner Hester Peirce will leave the agency on Friday (Oct. 2) after nearly a decade, and she used her final weeks to argue that widespread crypto adoption under new rules will entrench those rules politically.

In an interview with The Block published Monday (Sept. 28), Peirce framed the agency's central challenge as a durability problem: rules only survive if market participants build inside them.

"If you want the rules to be durable, and we're building rules within which people can actually do things and build things, then use that rule, use that regulatory framework to do and build good things that other people want," Peirce said. "It's harder to take them away."

What did Peirce deliver during her tenure?

Peirce, a Republican commissioner, became a key voice in the agency's pivot toward digital assets. Her departure coincides with the Senate's failure to advance the Clarity Act, a market-structure bill that would have split oversight of digital assets between the SEC and the Commodity Futures Trading Commission.

She told The Block she remains hopeful the legislation can still pass, and that the SEC retains a duty to use its existing authority to adopt rules even without a new statute in place.

Where is Peirce headed next?

Regent University School of Law announced on May 19 that Peirce would join its faculty in November to teach securities law and writing. She confirmed the move in a Friday (Sept. 25) post on X, writing "T minus 7" in reference to her Oct. 2 effective date.

In her resignation letter to President Donald Trump, Peirce thanked him for the appointment and said the United States is "exceptional because of its commitment to liberty."

"Maximizing people's freedom to choose what is best for themselves and their families within sensible regulatory parameters designed to give them the confidence to transact with others is a delicate and vitally important task for the regulator," she wrote. Peirce added that she leaves "confident that under the excellent leadership of Chairman Paul Atkins and Commissioner Mark Uyeda, the talented men and women of the Securities and Exchange Commission will continue to achieve that balance."

What does her exit mean for SEC rulemaking?

Peirce's departure removes a Republican ally to Atkins and Uyeda at the commission, with the resignation taking effect the same week the Senate left the Clarity Act stalled. That outcome shifts the burden of crypto oversight onto agency action through existing statutory authority.

The SEC's forthcoming decisions on token registration, custody standards and exchange frameworks will test Peirce's thesis directly. If issuers, custodians and trading venues build inside the new rule book, the framework becomes harder to dismantle in a future administration. If they don't, the agency's digital-asset agenda risks stalling alongside the failed legislation.

Peirce's last day on Friday leaves the commission with an open seat ahead of any renewed Senate push on the Clarity Act later this year.