I posted this not because I think the article is particularly important, but I read this one sentence ten times and still can’t make sense of it. Would somebody please explain this sentence to me?

If Stephens’ bill passes, it would mark the third of a dozen laws repealing tax breaks for businesses and passed in 2010 to be undone this year.

via Colorado House quickly approves bill to repeal 2010 law on online sales tax - The Denver Post.