Lumatek is a major brand that can be found in most grow shops. If it's widely known that they're not in compliance and have been labelled with fake FCC stickers

Lumatek is a major brand that can be found in most grow shops. If it's widely known that they're not in compliance and have been labelled with fake FCC stickers, why are they not being seized at the border? Why should any US manufacturer pay for compliance testing and the higher costs of US labor, when they could just have their product made in China and shipped back here with fake stickers?