One-click method detailed for both US carrier models
A simple one click root method has been found for the AT&T and the Verizon models of the new LG G2. Using the method for the Asian version, full instructions have been posted at XDA that will allow you to root the device, and get the tools you need — like the SuperUser utility — up and running in English.
Once rooted, a wide array of utilities and basic OS hacks become available, and we expect developer support for the G2 to be pretty high. It has the power under the hood and a great display, and plenty of tinkerers won't be able to resist this one.
For more information you'll need to refer to the source link. As usual, this sort of thing is something to think about before diving in and all the risk is on your shoulders.
Source: XDA forums