Here‘s how the trade war could lead to a boom in counterfeit goods

As the trade war between the U.S. and China has continued to heat up, Chinese nationals potentially could turn to a surprising way around tariffs: increasing the number of counterfeit goods, according to the Federal Bureau of Investigation.

Trade groups have warned Congress that tariffs could increase costs and drain resources available to fight illicit counterfeits. They also caution that consumers may knowingly or unknowingly seek counterfeit goods as legitimate goods become more expensive. Six trade groups sent a letter to the House Ways and Means Committee with the warning in June, according to .

Counterfeit goods cost the U.S. economy an estimated $600 billion a year, or 3 percent of the U.S. gross domestic product, according to Steve Shapiro, the unit chief for the FBI‘s intellectual property rights unit. Twenty-four federal and international law enforcement agencies work together to stop the illegal products. But booming e-commerce sales are adding to the flood of products agencies must monitor, and counterfeiters are increasingly learning how to make harder-to-spot fakes or finding new ways around the systems that were put in place to prevent fraudulent products.

“Every day I come into the office and I see new product categories that criminals are manufacturing fraudulently,” Shapiro said.

Shipments from China are including an ever-increasing number of counterfeit items, according to Frank Russo, the port director for Customs and Border Protection at John F. Kennedy International Airport in New York.