Looming tariffs could spell trouble for port workers, supply chain

Philadelphia's largest port is a fast-paced operation where tens of millions of dollars worth of goods are moved from ships arriving from the Delaware River and onto delivery trucks. But the smooth operation could face a roadblock in the form of tariffs.

Leo Holt, president of Holt Logistics, told CBS News he's watching the news regarding tariffs "24 hours a day."

"Including meetings and Zoom calls and every other kind of a call with the folks in other countries who supply the United States with many types of goods," Holt said.