The regulator said that the cryptocurrency trading platform allowed users to trade unregistered securities, a day after it accused the crypto platform Binance of mishandling funds.
The S.E.C. said the world’s largest cryptocurrency exchange mixed “billions of dollars” in customer funds and secretly sent them to a separate company controlled by Binance’s founder, Changpeng Zhao.
The Florida governor’s plan to announce his presidential campaign on the social network is the latest sign of the company’s efforts to court conservatives.
The focus of the inquiry was unclear, but several former executives said they had racked up more than $1 million in expenses dealing with it and other legal issues.