There are parts of the country (and only by state) that you MAY need to chain up a "toad" and the only place i can think off the top of my head my be certain times of like (logan pass) or very high very long mountain passes.
Other then that you do not need it as more and more states are just closing roads when they feel it is unsafe, so then you will not need them as the road will be passable when they reopen the highway. So i hope you understand it is only a few very high passes.
2010 Cedar Creek Silverback 35ts
2001 GMC 2500HD w/ Allison & 8.1