This is a major concern you may have, but the truth is yes, the USCCA is perfectly legitimate.  On their website you will find an impressive collection of articles written by expert writers from all over the country. They also produce a magazine that serves as a rival to pretty much any other gun/2nd Amendment/CCW related magazine that’s out there.
Their insurance is given out in the form of the Self Defense Shield.  Which is a very comprehensive self-defense shooting protection member benefit and insurance that can be used in all fifty states.
Take note that the Self Defense Shield is NOT a law firm that is only limited to practice in your state. This is good news for you, because it means if you travel and have to use your firearm defensively in another state, USCCA will still protect you no matter what state the incident occurs in.