Ok, so I asked a question and just get called names, no answers. In the US it is legal to carry a gun as long as it is in plain sight. Is there anyone on here that can tell me why I need a Conceal Carry Licence? I was thinking about getting the license, but now I am unsure.
As others have pointed out, your understanding of what's legal "in the US" is erroneous. Some people jump to conclusions about newcomers being trolls etc. It happens, but the way you asked the question, and your statement that you've been carrying in your rig with a gun "hanging" on the dash, displays a lack of understanding of at least some laws in at least some states.
In AL for instance, your weapon hanging on your dash would not be a lawful way to carry, with or without a concealed carry permit. Without a CCP from any of the states that issue them, the only way to legally transport a weapon in this state is unloaded and locked in either the trunk or a lockable box (or pistol safe) in an SUV or pickup or any other vehicle that doesn't have a trunk. You may not openly carry in a vehicle in this state under any circumstances. If you have a permit though, you can carry concealed just like you can while outside the vehicle. Also with a permit, you can have the weapon accessible and loaded in a glove-box or center console (you don't have to have it locked away in other words).
Now, even if you get a permit in your own state (which I don't think you've told us which state that is), most states are not like AL in that their reciprocity is limited to only states with which they have agreements. AL was one of those states until just two days ago. Now any permit is honored here, whereas, only 22 states that we had reciprocity agreements with were honored before August 1st. Our permits are only honored in those same 22 states still.
In short, you need a permit in order to be lawful in carrying concealed in your own jurisdiction, and to take advantage of the full width and breadth of carry laws in other states that honor your jurisdiction's permit.
Hope that helps, and welcome to the site.
Blues