A state cannot force its actions on another state. Kansas has one set of concealed carry laws, Missouri has another. A Kansas citizen cannot go into Missouri and demand a permit if they do not meet Missouri requirements merely because they have a Kansas permit. Likewise a Kansas citizen cannot carry in a state that forbids concealed carry merely because they can in Kansas. A state's laws cannot carry over the border unless the other state permits it.
Queer marriage?
In Kansas the state Constitution defines marriage as between a man and a woman. A homosexual couple cannot come into the state and file as a married couple, state law forbids it and just because Massachusetts says that they're married does not make them so here. An action that is legal in one state is not automatically legal in another. Nevada has legalized prostitution, that doesn't mean hookers are free to do so here.
Illegal immigration?
Last time I checked illegal immigration was a federal matter, not a state one. Illegal immigration?