Yes, one might conclude, based on the argument Steele offers in opposition to same-sex marriage:
"Now all of a sudden I've got someone who wasn't a spouse before, that I had no responsibility for, who is now getting claimed as a spouse that I now have financial responsibility for," Steele told Republicans at the state convention in traditionally conservative Georgia. "So how do I pay for that? Who pays for that? You just cost me money."
If you read his statement without knowing that he is talking about same-sex marriage, it would seem that Steele also opposes straight marriage. Every time a straight employee eligible for family coverage marries, the costs rise for the employer. For that matter, every time an employee eligible for family coverage has a child, costs rise for the employer: "Now all of a sudden I've got someone who wasn't a minor dependent before, that I had no responsibility for, getting claimed as a minor dependent... So, how do I pay for that?
H/T: Andrew Sullivan