Following the conviction of Dzhokhar Tsarnaev for the 2013 Boston Marathon bombing in April 2015, Baker released a statement supporting the verdict and stated that he supported the death penalty for Tsarnaev, which Tsarnaev was sentenced to the following month. Following the homicides of a police officer in Yarmouth in April 2018 and a police sergeant in Weymouth in July 2018, Baker stated that he supports capital punishment for criminal defendants convicted of murdering a police officer.