Reuters could not determine Coley's status in the government investigations or whether she had cooperated.
While he was its director of enforcement, the CFTC increasingly worked on investigations in parallel with federal prosecutors.
McDonald's representation of Coley comes as the U.S. investigations pile pressure on Binance, which dominates the crypto sector as the world's largest digital currency exchange.
The CFTC's complaint said that Binance personnel, including Zhao, have "dictated Binance.US's corporate strategy, launch, and early operations."
In a subpoena addressed to Coley that same month, the SEC also requested all records of her activities and meetings.