Michael,
If this Father Sirico agrees with the Acton Institute's statement (as quoted by Harland) that "The reality of sin makes the state necessary to restrain evil," then I guess the answer to your question depends whether he considers things like prostitution, drug use, and gambling to be "sins" that require the state to restrain them or not. The god of the Bible did not apparently distinguish between "sins" which involve committing aggression against others and those which do not, but perhaps Sirico recognizes the shortcomings of received Biblical wisdom in this matter.
Love & Liberty,
((( starchild )))