Dave McCormick, 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,

Democratic U.S. Sen. Bob Casey of Pennsylvania and Republican challenger David McCormick have held the first debate in their race for a swing-state seat.

David McCormick, who is challenging third-term Democratic Sen. Bob Casey of Pennsylvania, said he'll press for U.S. military action in Mexico to target fentanyl trafficking networks

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. The idea of using the military garnered attention in last year's GOP primaries before Trump emerged as his party's presidential nominee for the third consecutive time.