Nobody seems to get it, or wants to get it.
Marriage is a religious term.
Civil union is a legal condition.
The first amendment technically prevents any recognition of the term by the government, in spite of the sloppiness of legislation since the late 1700s. ALL unions between any two people are civil unions in the eyes of the law, and should be written as such.
The fact that the GBLT group is pushing it as marriage is because their ultimate goal is to use the government to attack religions. And frankly, the Obamacare rulings are aiding and abetting them in that process.