It is beneficial in that no nation can be free if all of its people aren't free.
gay rights are positive rights.
You don't get rights for being gay. In fact, depending on where you live, you lose rights for being gay.
Women's rights and gay rights definitely have some overlap, but the differences are in what rights are lacking.
They do support gay rights :)
The bible does not address gay rights.
The gay rights movement strives for equality.
The orientation of the parents has no effect whatsoever on raising children. So it's difficult to say how gay parenting is more beneficial than straight parenting. All good parenting is beneficial.
John McCain has no plan regarding gay rights.
The 5th ammendment does not violate gay rights.
No amendment bans gay rights on a federal level.
It's called being a proponent of gay rights.
John McCain does not support gay rights.