Originally Posted by
DieselDan
There is a joke here about USA made quality, but I'll leave that alone. Heck, I ride a Cannondale with cantilevered dropouts.
If you are the original owner, and the bike has never been raced or wrecked, Lemond/Trek owes you a new frame.
Oddly enough the nature of the crack there makes me think that it was a failed tube not failed workmanship. As the crack went through both tubes and the weld line without significant redirection. Means that the weld was done very well. Shoddy welding would have likely cracked around the tube rather than through the weld into another tube.
Either way I'd definitely get a dealer to look at it for warranty purposes.