FCC dropped the requirement for a CB license back in 1973-ish. The budroes at the FCC would like to have everybody on 1-watt or higher GMRS/FRS bust out $75 bucks for a 5-year license per group of users.
Hmm, I wonder just how few users actually buy these lincenses ? I'm thinking only VERY few do this.
FYI-No matter what kind of bragging rights that a blister pack of 2-way radios says on the package
10, 20 or 25+ mile range. The FCC mandates that all brands be low power and whimpy on Ch 8 to 14 !
So using Ch 8-14 is great in close call range uses, because of less power drain and bettery battery life.
So for full power and best range, go for either channels 1 thru 7 or 15 thru 22. And of course range ratings are NEVER what you will get anywhere close to in "actual use" ... ie terrain, buildings, walls & objects...
They claim they go out to flat land and test "line-of-sight" ranges ... ha ... but they are funny to read

PS-Channels 1 thru 7 are shared FRS/GMRS, 8 thru 14 are just FRS, and 15-22 strickly GMRS freqs.
It is amazing how cheap and powerfull these radios have gotten - great for consumers like us

Just a humorous stat on the VERY humble begginings of FRS 2-way radios ... I once heard a rumor
that either Radio Shack, Motorola or the public approached the FCC and said "Hey We Need This ... "
and the FCC agreed and wha la FRS was born and I believe back in the 1997 Radio Shack catalog
the very first FRS offering was a WHOPPING $179 each and had like some whimpy 100 or 300mw
RF power output and couldn't talk to the car in front of you even if you rammed its back bumper

)
When I started with RS their top of the line was $99 each and had only 14 channels, 38 quiet codes
and a blistering 500 mw output ... ( maybe 1/2 to 1 mile range ) but rugged ! cat # 21-1860 (RIP)
This little gem has 3 presets and "dual watch" that let a user monitor any 2 channels at once

Finally, FRS/GMRS radios sold in some other countries are on different freqs than the USA versions.
So USA models maybe ilegal for use in other coutries which just might have their PD/FD on these freqs.