The Blockchain Association has thrown fresh support behind six plaintiffs suing the United States Treasury Office of Foreign Assets Control (OFAC) over its sanctions on the crypto mixer Tornado Cash.

In a Nov. 20 amicus curiae brief to a U.S. appellate court, the crypto advocacy group argued OFAC’s decision to sanction the privacy protocol was not only unlawful but exceeded its statutory authority and was both “arbitrary and capricious” — contrary to the U.S. Constitution.

It’s the second amicus brief filed by the Blockchain Association supporting a group of Tornado Cash users appealing a lower court’s ruling that upheld OFAC’s decision to add the cryptocurrency mixer to its…

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