The Republican challenger trying to flip the U.S. Senate seat in swing-state Pennsylvania said he’ll press for U.S. military action in Mexico to target fentanyl trafficking networks, a controversial and complicated idea that seemed to originate with former President Donald Trump.

While federal agents are seizing fentanyl at record levels, a mother who lost two teens to the deadly drug is speaking out to try and spare other families from “the worst pain possible.” Kareen Wynter reports on Sept.