Encryption has become a very thorny subject of late, particularly in but not just limited to the US, which isn't that surprising considering most of the tech companies of the world call the country their HQ. Although it has since slightly weakened its formerly strong language, the US government stands by its position. Speaking at the World Economic Forum in Switzerland, US Attorney General Loretta Lynch reiterated that position. The US doesn't want encryption back doors. They just want access to encrypted systems through another door that isn't the front. So maybe a side door perhaps.