The PCUSA voted and approved Tuesday, 3/17/15, an amendment to their Constitution that approves of marriage between two people of the same sex. The official tally has not been posted yet. ref The new amendment takes effect June 21, 2015 ref.
"Him that is weak in the faith receive ye, [but] not to doubtful disputations. For one believeth that he may eat all things: another, who is weak, eateth herbs." Romans 14:1,2