I don’t think the hawaii folks did vouch for it - if they did, I would like to see the exact words that they used
http://www.usatoday.com/news/nation/2009-07-27-obama-hawaii_N.htm
I, Dr. Chiyome Fukino, director of the Hawaii State Department of Health, have seen the original vital records maintained on file by the Hawaii State Department of Health verifying Barack Hussein Obama was born in Hawaii and is a natural-born American citizen.