http://www.tsa.gov/public/display?th...00051980104b15
Be forewarned: Enforcement begins Thu Apr 14. This will affect Canadians & others who, having entered the US with their lighters, some of which could be family heirlooms, war souvenirs, etc, will now not be able to fly with them, neither in checked bags nor in carry-on or pocket. And don't go back to the airlines, lighters can't be expedited or shipped by cargo either!!
So..
Remember to leave home without them!