Bitcoin (BTC-USD) dipped below the $27,000 mark after news emerged that Binance, the world’s largest cryptocurrency exchange, is facing a US ban.

Binance is being sued by the Commodity Future Trading Commission (CFTC), which could also lead to a possible trading and registration ban in the US.

Bitcoin fell 3.4% after the CTFC announcement, which stated: "The Commodity Futures Trading Commission today announced it has filed a civil enforcement action in the US District Court for the Northern District of Illinois charging Changpeng Zhao and three entities that operate the Binance platform with numerous violations of the Commodity Exchange Act and CFTC regulations."

Changpeng “CZ” Zhao is the CEO of Binance, and the CFTC has accused him of encouraging Americans to “evade compliance controls” and breaking US law.

The Binance cryptocurrency exchange has also been accused of failing to properly register with the CFTC.

The impact of the CTFC investigation into Binance has added to already cautious investor sentiment pervading crypto markets, as traders await the outcome of the SEC's notice to Coinbase (COIN).

Bitcoin was down 3.4% to $26,935 on Monday.

Ethereum (ETH-USD) fell 3% to $1,712.

The annoucnement by the CTFC also contained a statement by CFTC chairman Rostin Behnam, who said: “Today’s enforcement action demonstrates that there is no location, or claimed lack of location, that will prevent the CFTC from protecting American investors.

"I have been clear that the CFTC will continue to use all of its authority to find and stop misconduct in the volatile and risky digital asset market.

“For years, Binance knew they were violating CFTC rules, working actively to both keep the money flowing and avoid compliance.

"This should be a warning to anyone in the digital asset world that the CFTC will not tolerate willful avoidance of U.S. law. I applaud the diligent and dedicated work of the CFTC’s Enforcement team in bringing this action, and for their hard work in addressing illegal operations in the digital asset space.”

After the news, the global cryptocurrency market cap was at $1.17tn, a fall of 2.8%, according to Coingecko data.

Coinbase receives SEC Wells notice

Last Wednesday, the US Securities and Exchange Commission (SEC) issued Coinbase Global Inc with a Wells notice — a formal declaration that the regulator intends to recommend an enforcement action.

Shares in Coinbase (COIN) dropped nearly 13% to $67.83.

If the SEC officially classifies cryptocurrencies as securities it would impact the trade volume on cryptocurrency exchanges such as Coinbase by trade volume.

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All cryptocurrencies, except bitcoin, would need to register with the SEC, and be forced to adopt technology systems to make their order books audit-compliant.

They would also face strict rules on order execution to prevent market manipulation.

Exchanges such as Coinbase could risk large fines from the SEC for listing cryptocurrencies that the regulator would deem as being unregistered securities.

SEC chair Gary Gensler said he considers all cryptocurrencies securities except for bitcoin.

Crypto market reaction to US Federal Reserve rate hike

The cryptocurrency market remained largely in the green after the Federal Reserve decided upon a less hawkish rate hike at last Wednesday's Federal Open Market Committee (FOMC).

The Fed's 0.25% increase takes the benchmark federal funds rate to a target range of between 4.75%-5%.

“The Committee will closely monitor incoming information and assess the implications for monetary policy,” the FOMC’s post-meeting statement said.

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“The Committee anticipates that some additional policy firming may be appropriate in order to attain a stance of monetary policy that is sufficiently restrictive to return inflation to 2% over time.“

Federal Reserve chair Jerome Powell said: "The process of getting inflation back down to 2% has a long way to go and is likely to be bumpy.”

Cryptocurrencies have historically reacted positively to lower interest rate environments, which can encourage more liquidity in global markets.

Watch: Web3: Venture capital still pouring into crypto, claims head of Outlier Ventures | The Crypto Mile

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