According to handgunlaw.us, yes. New Mexico allows car carry, even without a permit. Added: you can have an unloaded, unaccessible gun in your car in any state, by federal law, if you are just transporting the gun from one point to another.
Yes, in accordance with the laws of the state(s) the driver is traveling through.
Yes, in Texas one can carry a hand gun in the motorcycle saddlebags. A person can also carry a handgun in plain sight while traveling.
If you have a handgun carry permit, definitely. The handgun carry permit covers "any handgun that you legally own or posses."
Yes. All of those states recognize Tennessee handgun permits.
You can not carry an unconcealed handgun in Texas with or without a license.
No
Yes you can carry pepper spray legally in Mexico for self defense purposes only. If traveling by plane, it is important that you research the legal amount to travel with.
All countries - once you have legal permission, allow you to carry a handgun.
No
It depends on what you mean exactly. You can transport an unloaded handgun in your vehicle while you travel as long as the handgun isn't accessible to you. However, if you have a handgun carry permit, you can carry the gun on your person in some states. That said, you can carry a handgun on your person inside your car in some states without a permit. Check out handgunlaw.us for more information about each individual state's laws.
You can legally transport it unloaded and inaccessible, but to have it loaded and accessible, you must have a NY handgun carry permit.
No, Washington DC does not allow concealed handgun carry, nor do they recognize permits from any other state.