Baker tries again to set up new board to oversee the MBTA The current oversight panel is due to sunset later this year. By Adam Vaccaro Globe Staff,Updated January 30, 2021, 6:01 a.m. Email to a Friend Joseph Aiello has been chairman of the MBTA's oversight board for nearly six years.Keith Bedford/GLOBE STAFF/FILE Governor Charlie Baker on Wednesday introduced his proposal to establish a new set of overseers for the MBTA. Maybe it will stick this year. As part of his budget filing for the upcoming fiscal year, Baker proposed a new seven-member governing board for the transit agency that would take over next summer. The current board is on a one-year holdover from its legislated expiration in 2020.