Pennsylvania Republican in key swing-state Senate race backs using military to fight fentanyl

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. David McCormick, who is challenging third-term Democratic Sen. Bob Casey of Pennsylvania, is making the idea part of his plan for fighting the fentanyl scourge, which is playing a big role in the campaign and has been central to dueling TV ads in the race.