The liberal group staffer accused of grabbing and refusing to let go of Nevada gubernatorial nominee Adam Laxalt’s female campaign manager has a history of heavy-handed tactics, according to lawmakers and congressional aides.

Wilfred “Mike” Stark III gained a reputation for aggressive, abrasive behavior, including in the course of his work for American Bridge 21st Century, a political action committee founded by Hillary Clinton ally David Brock and funded in part by billionaire George Soros.