You seem confused about cause and effect. The GOP started their policy of total obstructionism (no votes for any Democratic policies, period, regardless of merit) in December 2008, immediately after the elections. There were caucus meetings where this plan was laid out by leadership and agreed to by all members.

I don't think you can blame the passage of the ACA in 2009 for an obstruction policy begun in 2008. Time only flows in one direction, as far as I know.

If you were less ignorant about the subject, you would probably realize that the ACA passage without much Republican support was the result of Republican obstruction policies, not the cause of them.