6-APB and 5-APB are now Schedule I by law as of Apr 29, 2013. Previously, 6-APB and 5-APB were added to Schedule I by emergency rule in Florida as "APB ((2-aminopropyl)benzofuran)". See myfloridalegal.com/webfiles.nsf/WF/MMFD-92VKZ8/$file/ER+RuleOAGRuleCertification12-11-2012.pdf, but this emergency rule appears to have expired after 90 days. There is a senate bill that would control 5/6-APB along with a dozen other stimulants and cannabinoids, but it has not yet passed into law. See http://www.flsenate.gov/Session/Bill/2013/0294. (SB 294). (thanks CM) (last updated May 14, 2013)

2C-C, 2C-E, 2C-D, 2C-T-2, 2C-T 2C-T-4, 2C-H, 2C-N, 2C-P, 4-FA, 4-FMA, 6-APDB, 5-APDB, 5-APB6-APB, MDAI, 5-IAI, 4-HO-DIPT, 5-MeO-DMT, 5-MeO-MIPT, 5-MeO-DALT, DIPT, Methoxetamine, and the NBOMe compounds are Schedule I (as of June 2013). See http://www.legis.state.la.us/lss/lss.asp?doc=98877. (thanks ch) (last updated Mar 15, 2014)

Minnesota added 6-APB (and by 'analog' extension 5-APB) to its Schedule I in 2012. See https://www.revisor.mn.gov/laws/?id=240&year=2012&type=0. (thanks w) (last updated May 9, 2013)

One visitor reported that a person in Nevada had charges dropped after the white powder they were arrested with was confirmed to be 6-APB. (unconfirmed) (last updated May 6, 2013)

One visitor reports that some municipalities have banned the sale, though 6-APB is not yet controlled by the state. One product sold as "Mindful Cleaning Product". (unconfirmed) (thanks dm) (last updated Mar 2 2013)

6-APB is a Schedule I substance in Wisconsin as of mid 2018. See http://docs.legis.wisconsin.gov/statutes/statutes/961.pdf. (thanks dd) (last updated Aug 18 2018)