The Massachusetts governor, Maura Healey, announced plans to pardon all simple marijuana possession charges from the state, which could affect “hundreds of thousands” who have faced charges.

“We believe this is the most sweeping cannabis pardon announced by any governor in the United States. The reason we do this is simple: justice requires it,” Healey said at a press conference on Wednesday.

Though the state does not have exact numbers of how many people the pardon will affect, Healey said it could be “hundreds of thousands” in Massachusetts.

The pardon does not cover other marijuana-related charges, including those related to distribution or driving under the influence. Without the pardon, simple marijuana possession charges can show up on people’s criminal records, affecting their ability to obtain a job or housing.