The announcement came on his first day on the job.
Laffin will be assuming the office of current GSG President Annie Rappeport.
Thousands have signed onto petitions calling for, among other demands, increased funding for mental health personnel.
Pines will take over as president on July 1.
Miller played a critical role in garnering state support for several initiatives at this university.
Some Black-owned businesses have reciprocated the support by participating in Black Lives Matter demonstrations.
Thousands have signed on, joining the call begun by a doctoral student.
The event followed an eight-hour-and-46-minute prayer chain.