Is there a site (or thread here somewhere) that shows, in relatively simple language what the laws are for each state if you are road tripping the US?  My son is traveling (scenic route over about a month) to CA, then visiting with my daughter for a few months and I'm trying to figure out the lowest common denominator for him to be armed and how things need to be secured/stored, if at all. Right now, he's thinking a Mossberg 500 with trigger lock and a PSA Dagger (with some Cali 10rd mags) with lockbox as needed.

For a kid who grew up in Florida he's getting a real lesson on "how the other half lives" as regards 2A.

Perfect thanks man.