[1][2][3][4] He is a member of the Massachusetts Black and Latino Legislative Caucus.
[5] Before being elected to the state house, Williams was a member of the Springfield City Council, serving two tenures.
[6][7] After being elected to the state house, he decided that he would continue to coincidently serve out the remainder of his term on the City Council, but not seek reelection afterwards.
[7] In 2002 he ran unsuccessfully for State Representative, losing the Democratic primary for the 11th Hampden district seat to Benjamin Swan.
[6] In early 2023, Williams cosponsored a bill to allow Massachusetts prisoners to earn time off from their sentences by immediately forfeiting some of their vital organs and/or bone marrow to the state.