That's not the point. The point is that its inconsistent for one state to be able to strip a person from another state of their rights, unless the crime, and penalties are standardized nationwide.
No it isnt. No state can strip a citizen of another state of right unless that citizen commits a crime in that state. American states are sovereign. Each and every one.
And to that end I will quote Louisiana governor Edwin Edwards' response to New York governor Mario Cuomo when the latter complained that a New York citizen was being executed in Louisiana. Edwards replied "if you have a problem with us executing New Yorkers tell them to not come to Louisiana and commit a crime".
Crime and penalties, marriage, inheritance, voting, property law, criminal law..all these vary by state.