'Marriage between man and woman'

The US Supreme Court is to consider whether to strike down a law denying federal benefits to same-sex couples, a day after weighing a gay marriage ban.

The Defense of Marriage Act denies gay couples access to federal benefits under its definition of marriage as a union between a man and a woman only.

Bryan Fischer of the American Family Association, which opposes same sex marriage, argues that marriage is defined as "a union between one man and one woman."