That has overshadowed debate over how to handle the nation's drug overdose crisis, which has contributed to the deaths of more than 470,000 Americans over the last two decades.
The exchange over Hunter Biden's struggle with addiction was brief, and neither candidate was asked a follow-up question about their plan to tackle the nation's drug addiction and overdose crisis.
Yet drug addiction continues its grim march across the U.S., having contributed to the deaths of more than 470,000 Americans over the past two decades.
Ohio, a battleground state in the presidential contest, is on track to have one of its deadliest years of opioid drug overdoses.
For example, his policies eased access to drugs that are meant to control opioid addiction, especially for people receiving health coverage through Medicaid.