[Polybius]

Please tell me which one of the 50 states have a law that says that they do not recognize marriages from other states? For instance, in one is married in Illinois, then moves to Florida, that couple in Florida is entitled to all the benefits of marriage that every other married couple enjoys.

Only if that union meets the new state's legal defintion of marriage. For same-sex marriages, that is not the case:

STATES THAT PREVENT RECOGNITION OF OUT-OF-STATE SAME-SEX MARRIAGE LICENSE

As you can see, they include both Florida and Illinois.

In the South, the standard reply to the argument that (fill in the black) was legal in Massachusetts is:

"Well, you're not in Massachusetts anymore, boy, and it ain't legal here!"

[Akira]

Thanks for the link and list.