He addresses this in his testimony when he talked about emissions standards in California affecting emissions standards across the US. I believe his words were,

He addresses this in his testimony when he talked about emissions standards in California affecting emissions standards across the US. I believe his words were, "We don't need two versions." Often times regulations in one jurisdiction will impact behavior and equipment sold in other jurisdictions. This is especially true when the regulations are not particularly onerous, the jurisdiction with the regulations represents a large market relative to the total market, and the number of suppliers forced to comply with the regulations is limited. I worked for a long time in the embedded networking equipment hardware business and was involved in the rollout of ROHS. https://en.wikipedia.org/wiki/Restriction_of_Hazardous_Substances_Directive https://en.wikipedia.org/wiki/Restriction_of_Hazardous_Subst... ROHS is a EU directive, but it had the larger effect of limiting hazardous substances in devices across the world. Manufacturers wanting to sell equipment into the EU had to get rid of stuff like lead solder and replace it with safer elements. It was simply too expensive for most hardware manufacturers to have two different manufacturing processes, one for the EU, and another for everyone else. So now in the USA you have a difficult time finding lead solder in new electronic devices, and it's because of the EU and ROHS. Hardware device manufacturing these days is incredibly concentrated. These companies will abide by whatever regulations the USA or the EU forces them to abide by because they want to sell into these markets. And it's likely not cost effective for them to create parallel assembly for smaller markets.