In 2013 $461 Billion worth of counterfeit goods were trafficked worldwide. roughly 20% of that number is American-made products. The U.S. Customs and Border Protections, Recordation can protect your trademark, brand and business, but the system is one that a lot of private label sellers don't fully understand.
For most businesses, it's a question of when, not if they'll face counterfeiting, so get ahead of the curve with the Private Label Lawyer. Find more info from the CBP here: https://iprr.cbp.gov