Start TODAY. Here's the link to their contact page:
http://www.fws.gov/DUSPIT/contactus.htm
I'd point out the following:
1) many boa constrictor subspecies don't get much more than 5'.
2) These species can't survive outside of Florida (I have been citing: Pyron RA, Burbrink FT, Guiher TJ (2008) Claims of Potential Expansion throughout the U.S. by Invasive Python Species Are Contradicted by Ecological
Niche Models. PLoS ONE 3(8): e2931. doi:10.1371/journal.pone.0002931) and that there are studies that refute the USGS report.
3) How much interstate transport is important for you- whether you want to buy or sell, indicate how important is is for your hobby or business, and for the reptile GENE POOL for healthy and genetically strong specimens!
I sent mine. I think I'll send e-mails to them EVERY DAY.