Stop Fentanyl Border Crossings Act

This bill amends the Public Health Service Act to give the Secretary of Health and Human Services authority to temporarily restrict people and property entering the U.S. from specific foreign countries. It directly affects border crossings from nations identified as sources of significant fentanyl smuggling that poses a serious public health danger. The key provision allows the Secretary to prohibit or limit these entries for a set period, based on their determination that such restrictions are necessary to avert the risk of fentanyl introduction. The measure focuses on public health protection related to fentanyl trafficking, not broader immigration policy.