Former GOP presidential candidate Herman Cain’s chief of staff is joining him at his new super-PAC. 

Mark Block will serve as the treasurer for Cain Connections PAC, according to documents filed with the Federal Election Commission.

Block is well-known for his work on the Cain campaign last year, including an unusual appearance in a commercial that showed him smoking.

He also came under criticism last year from Citizens for Responsibility and Ethics in Washington (CREW), which said the nonprofit Prosperity USA, which Block ran, helped initially fund Cain’s campaign through paying for $40,000 worth of campaign trips and iPads.

Nonprofits aren’t allowed to contribute to campaigns.

—Jonathan Easley contributed.