OK, whether Gibson was wrong or not, a whole lot of hand wringing and gnashing of teeth has been about people fearful that they are comin' fer yer grand pappy's heirloom guitar with ivory saddle/nut and Brazilian rosewood back, etc.

The amendment to this 100 year old act that made woods subject to it, has specific exemptions for both objects made before 2008 and for musical instruments:

http://www.aphis.usda.gov/plant_health/lacey_act/downloads/LaceyActPrimer.pdf

Goods Manufactured Prior to Amendment • Enter“ManufacturedPriortoMay22,2008”
– For material that cannot be identified mark the Genus as “Special” and mark the species as “PreAmendment”
Musical Instruments for performances Enter“MusicalInstrumentsforuseinperformance”or, Enter“MusicalInstrumentsreturningfromperformance”

Also, for those keeping score of the politics, remember: if the amendment took effect in 2008 it was GWB who signed the bill.