Sanders, Warren Hit 401(k) Crypto Rule as MiCA Cuts Europe to 210 Firms
The crypto market is facing a brutal regulatory squeeze on both sides of the Atlantic, with US lawmakers pushing to block digital assets from 401(k) plans while Europe’s MiCA framework slashes the number of licensed crypto firms by over 90%. This dual pressure signals a definitive shift from “growth at all costs” to an era of institutional filtering, forcing the industry to mature within hardened legal perimeters.
In Washington, Senators Bernie Sanders and Elizabeth Warren, joined by Representative Bobby Scott, are urging the US Department of Labor to scrap a proposed rule that would allow cryptocurrencies into 401(k) retirement plans. Their June 1 letter to Acting Secretary Keith Sonderling warned that a safe-harbor provision would strip protections from retirement savers, steering them toward volatile assets. They pointed to the spectacular collapse of Donald Trump’s namesake memecoin, which once hit an all-time high above $73 before plummeting near $2, and cited FBI data showing crypto-linked fraud losses topped $11 billion in 2025. The lawmakers also flagged conflicts of interest tied to the Trump family’s reported $5 billion in token-related paper wealth. This move underscores significant regulation pressure on crypto’s integration into traditional finance, potentially limiting a massive inflow channel for retail investors.
Across the pond, Europe’s crypto sector is undergoing its sharpest regulatory contraction in years. Roughly 210 firms now hold a Markets in Crypto-Assets (MiCA) license ahead of the July 1 deadline. This figure represents a mere 7% to 8% of the nearly 2,747 Virtual Asset Service Provider registrations recorded across the European Union in 2024. Poland alone previously accounted for more than 1,400 of those legacy registrations. Industry trackers logged 183 authorized crypto-asset service providers in April 2026 before the count climbed to 210 in May. Smaller firms cite governance, prudential capital, and cybersecurity requirements as prohibitive fixed costs they simply cannot absorb under the new framework. Estonia offers a stark illustration of MiCA’s compression effect, with its active VASP count falling from 641 in June 2021 to just 40 by February 2025 – a more than 90% decline in under four years. France paints a similar picture, with only 30% of roughly 90 unlicensed French operators applying for MiCA authorization by early 2026, and 40% confirming they would not pursue licenses at all. This regulatory culling is a clear adoption signal that only well-capitalized, compliance-ready entities will survive in the European market, potentially concentrating liquidity and trading volume among fewer, larger players.
The impact of this tightening environment is already visible in capital flows. Inflows into digital asset treasury companies collapsed in May, plunging 95% from the previous month to just $180 million — the lowest monthly figure since October 2024. That total ran roughly 93% below the January-through-May monthly average, after two unusually strong months that delivered $4.2 billion in March and $4.4 billion in April. Bitcoin treasury vehicles accounted for nearly all of May’s intake at $177 million, or about 98% of the total. Investors appear to be reassessing passive treasury models as altcoin exposure thins and net-asset-value compression mounts against listed accumulation vehicles. This dramatic drop in macro flow suggests a flight to quality within the digital asset space, with BTC maintaining its dominance as institutional investors become more discerning.
Meanwhile, on Capitol Hill, US senators return from recess this week with the CLARITY Act debate set to resume. This legislation seeks to delineate jurisdictional boundaries between the SEC and CFTC over crypto spot markets, an issue that has clouded compliance pathways for exchanges, custodians, and token issuers operating on blockchain rails. Industry advocates have framed the bill as essential for unlocking institutional flows and standardizing oversight of DeFi infrastructure. The outcome will shape whether US-based platforms can compete with European frameworks now hardening under MiCA. This ongoing regulation pressure highlights the critical need for clear rules of the road for US crypto markets, without which institutional adoption will remain stunted.
The week’s headlines trace a single arc — regulatory tightening on every front. Washington is weighing whether retirement savers should ever touch crypto while simultaneously debating the CLARITY Act’s market-structure rewrite. Brussels is enforcing a licensing regime that has eliminated more than 90% of the continent’s previously registered operators. Capital is responding accordingly: treasury inflows have collapsed, protocols without recovery paths are shutting down, and survivors are concentrating around compliance-ready balance sheets. Decentralized lending protocol Radiant Capital, for instance, confirmed it will wind down operations after failing to recover from a $50 million exploit attributed to North Korea’s Lazarus Group in October 2024. The team said it could not secure a viable path forward, lacking the recovery, capital, or growth runway needed to operate responsibly. Total value locked collapsed from $75 million immediately after the breach to $5 million within weeks and never rebounded. Radiant will transition into a maintenance state, allowing users to withdraw remaining positions while contributors step back from active protocol development. This is a stark reminder that security and recovery plans are paramount in a maturing market.
What this means
This confluence of regulatory actions signals a significant maturation phase for the crypto industry. The days of “move fast and break things” are rapidly being replaced by a demand for robust compliance, capital requirements, and consumer protection. For investors, this means a likely consolidation of market share among well-regulated entities and a potential reduction in the sheer number of available tokens and protocols, particularly in the altcoin space. The sharp decline in treasury inflows and the struggles of protocols like Radiant Capital underscore that capital is becoming far more discerning, favoring projects with clear regulatory pathways and strong security postures.
What to watch next: Keep a close eye on the CLARITY Act debate on Capitol Hill this week. Its outcome will be crucial for defining the future of US crypto market structure and could either unlock or further restrict institutional participation. Also, monitor the impact of MiCA’s July 1 deadline in Europe; any further reduction in licensed firms or significant shifts in trading volumes could indicate a more concentrated, but potentially more stable, European crypto market. For traders, this environment suggests a continued premium on established, compliant assets like Bitcoin, which accounted for 98% of May’s treasury intake, and a cautious approach to smaller, less regulated altcoins.