[george wythe]

In some countries, such as northern European nations, gay marriage is legal. Nevertheless, gay couples who are married outside the US are not recognized as married couples when they return to the US.

Since American states are free to disregard gay marriages in Sweden, while accepting hetero marriages in Sweden, why can't the states have the same policy toward Massachusetts?

If the states pick and choose which marriages are considered legal in their jurisdiction when it comes to foreign marriages, why are the states not free to do the same about marriages in other states?

[WinOne4TheGipper]

A future liberal Supreme Court (or maybe this one, depending on Kennedy or O'Connor) could force this on the other states by way of the Full Faith and Credit Clause.

[Truthsayer20]

"In some countries, such as northern European nations, gay marriage is legal."

Actually, gay unions are NOT designated as "marriages" in most countries where they are legal. America would actually "lead" the world in legalizing gay marriage.

[NYFriend]

They can