Senator Ed Markey wants a nationwide ban on tear gas and rubber and plastic bullets.
The Massachusetts Democrat tweeted this morning he did not believe police departments should be able to use the less-than-lethal rounds or bean bag rounds.
He also tweeted police departments needed to be banned from using weapons of war.
Markey cites the current situation in Portland, Oregon as reason for the needed ban.
Opponent Kevin O'Connor says that he supports police but he also wants diversity. He says that he would support more grants for police training.