The U.S. Securities and Exchange Commission voted to take cryptocurrencies into account by adopting rules that would require participants that play a significant liquidity-providing role in the markets to comply with federal securities laws. The SEC voted 3-2 at Tuesday's meeting to adopt the rulemaking, which mentions cryptocurrencies only once in a footnote in the proposed 194-page document. The 247-page rule adopted Tuesday will apply to people who trade in crypto assets that meet the definition of a security or government security, except for assets under $50 million.