Donald Trump is in favor of concealed carry reciprocity:
The right of self-defense doesn’t stop at the end of your driveway. That’s why I have a concealed carry permit and why tens of millions of Americans do too. That permit should be valid in all 50 states. A driver’s license works in every state, so it’s common sense that a concealed carry permit should work in every state. If we can do that for driving – which is a privilege, not a right – then surely we can do that for concealed carry, which is a right, not a privilege.
Source: National Reciprocity a Reality Under President Trump – Breitbart