The US, through its International Trade Commission or ITC, has formally banned all hoverboard imports coming into the country. But no, this has nothing to do with their safety. In fact, only Segway's hoverboards are except from that import ban. That's because the issue at hand is the consequence of a patent infringement case that surface last year. Practically declaring all other hoverboards to be infringing on Segway's patent, the ITC has decided to block their entry into the US, regardless of their safety.