The CEO and co-founder of cryptocurrency exchange Coinbase, Brian Armstrong, believes that banning retail crypto staking in the United States would be a “terrible” move by the country’s regulators. 

Armstrong made the comments in a Feb. 9 Twitter thread which has already been viewed over 2.2 million times, after noting they’ve heard “rumors” that the U.S. Securities and Exchange Commission “would like to get rid of crypto staking” for retail customers.

“I hope that’s not the case as I believe it would be a terrible path for the U.S. if that was allowed to happen.”

Armstrong did not share where the rumors originated but noted that staking was “a really important innovation in crypto.”

“Staking brings many positive improvements to the space, including scalability, increased security, and reduced carbon footprints,” he added.

Armstrong also referenced an Oct. 5 blog post from crypto investment firm Paradigm, which argued that Ethereum’s transition to proof-of-stake and its subsequent “staking” model does not make it a security.

The Paradigm post came just a few weeks after SEC Chairman Gary Gensler suggested that proof-of-stake (PoS) cryptocurrencies could trigger securities laws. He made the remarks Sept. 15, while speaking to reporters after a Senate Banking Committee meeting.

Armstrong also lambasted the current lack of regulatory clarity in the U.S. and subsequent “regulation by enforcement” that he says is driving companies offshore, such as crypto exchange FTX.

He has reiterated calls for regulation that provides clear rules for the industry while preserving innovation.

Related: Crypto exchange Kraken faces probe over possible securities violations: Report

According to Staking Rewards, the top four staked cryptocurrencies by market cap account for over $55 billion in staked assets, suggesting a country-wide ban would be a huge hit to the country’s crypto industry, which has already seen an exodus of crypto-related businesses.

Top crypto assets by staking market cap. Source: Staking Rewards

Some industry commentators have suggested that the SEC might go after centralized parties that offer staking services rather than the technology itself, arguing that the agency attacking the latter would be a losing battle that would “crush them in precedent.”

The general counsel for Delphi Digital’s research and development arm, Gabriel Shapiro, suggested there is a strong argument that staking services provided by centralized exchanges like Coinbase constitute a security, drawing parallels between them and other “Earn” products.

Coinbase is currently subject to an ongoing SEC probe, which Coinbase revealed in an Aug. 9 SEC filing was in relation to its staking rewards among other offerings.