Over the top? It's not even universally accepted everywhere in the U.S. According to Wikipedia:
In the U.S., states may restrict adoption by sexual orientation or marital status. Furthermore, since adoptions are mostly handled by local courts in the United States, some judges and clerks accept or deny petitions to adopt on criteria that vary from other judges and clerks in the same state, leading to a confused or ambiguous legal status for same-sex parents in some states.