This detailed look at the US #RouterBan is worth a read.

TL;DR: the security risks are real, but the ban – and the associated conditional approval process – may be set up to give a commercial advantage to one company in the space.

https://www.reddit.com/r/pwnhub/comments/1s2thgj/the_fcc_router_ban_following_up_on_a_post_here/