Squire Patton Boggs is the latest law firm demanding the Biden administration remove a non-U.S. person from the government’s international trade sanctions list.

More than 20,000 individuals or entities appear on the Treasury Department’s Office of Foreign Assets Control list as a specially designated national subject to asset freezes and global banking restrictions.

“It is very, very difficult to win those cases, almost impossible,” said Arkady Bukh of the New York-based Bukh Law Firm. “The quantity and quality of the evidence is usually good.”