Another round of social media congressional hearings is upon us. This time, it's Twitter CEO Jack Dorsey's turn, who will be testifying alongside Facebook's Chief Operating Officer Sheryl Sandberg before the Senate Intelligence Committee on September 5th. But that hearing, which will focus on foreign election interference, won't be the only one of the day for Dorsey. He's also set to testify alone in a hearing from the House Energy and Commerce Committee entitled "Twitter: Transparency and Accountability." There, he'll be asked questions about how the company's algorithms work to filter out abuse, as well as its decision-making process when it blocks certain content (and accounts) from appearing on its site.