From the San Diego Union Tribune:

Many of the National Football League and Major League Baseball items sold in Tijuana and throughout Mexico are counterfeit – a savings for consumers but a financial hit for the professional leagues and their manufacturing partners.

Some are made in Tlaxcala, Mexico, and brought to the border without the producers paying licensing fees to the leagues or owners of the licensing rights. Other items are made in China.

An estimated 60 percent of all clothing and textiles sold in Mexico are counterfeit.

Counterfeit clothing is listed at $8.24 billion.