Could this simple argument prove key to a pro-same-sex marriage ruling in the Supreme Court?

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A simple argument in favour of same-sex marriage has been raised in the Supreme Court, which may allow justices unsure which way to vote to make a decision.

The nine Supreme Court JusticesĀ earlier this weekĀ Ā heard oral arguments inĀ a ground-breaking case concerning marriage bans in the states of Michigan, Ohio, Tennessee, and Kentucky, in the first large-scale Supreme Court action on the issue since a rulingĀ in 5-4 favour of equality during 2013ā€™s United States v Windsor.

Justice John G Roberts Jr may have found a way to vote for same-sex marriage, by only considering the issue in terms of sexual discrimination, rather than to do with sexuality.

During arguments on the issue earlier this week, Justice Roberts said: ā€œIā€™m not sure itā€™s necessary to get into sexual orientation to resolve this case…Ā I mean, if Sue loves Joe and Tom loves Joe, Sue can marry him and Tom canā€™t. And the difference is based upon their different sex. Why isnā€™t that a straightforward question of sexual discrimination?ā€

The New York Times suggests the theory, which was considered a few times during earlier proceedings on same-sex marriage across the US, could be a way for the Chief Justice to avoid being accused of being “on the wrong side of history.

Halfway through the arguments, a man interrupted proceedings,Ā screaming the words ā€œhomosexuality is an abominationā€.

The Justices are expected to rule on the issue in June.