MyUS.com does the best job in that regard: they are registered as exporter and they open EVERY package and verify it. Their postal code even gets you 0% sales t

MyUS.com does the best job in that regard: they are registered as exporter and they open EVERY package and verify it. Their postal code even gets you 0% sales tax on any US webshop. Their service costs as much as regular UPS/FedEx/DHL delivery would cost you...