SOMERSWORTH, New Hampshire — Kamala Harris put pharmaceutical companies on notice Sunday, asserting that they can either exacerbate the opioid addiction crisis or risk a lawsuit from a Harris administration.

The California senator issued the warning during a campaign stop in Somersworth, New Hampshire, her second event as part of a one-day trip to the Granite State. New Hampshire, the host the second nominating contest of the 2020 Democratic presidential primary, has one of the highest rates of opioid-related deaths in the country.

“We will agree that no family — no parent, no spouse, no uncle, aunt, no child — should have to, in our America, keep waking up in the middle of the night with heartache, concerned about their family member who has an opioid addiction,” Harris said.

The former attorney general of California, 54, said the problem should be approached “understanding it is a public health epidemic, which requires resources to deal with treatment and deal with support, to deal with supporting grandparents who are helping to raise the children of those who have been touched by this crisis.”