Think it's somewhere in the Capital? Or is it just a myth?

.......you do know the cherry tree myth is attributed to President George Washington...right?

This.

It's more than a myth, it's a historical inaccuracy! In all seriousness, no, the item does not exist, the games been modded and anolyzed far too much for it to be missed.

Oh, I thought it was why he was called "Honest Abe".

Anyways, Lincoln's ghost haunts the White House still.

OK...Well, this thread isn't what I expected. I came here thinking I'd find out about a special and unique weapon, buried in the Lincoln Memorial or something. Then I read the fine print...

Well, hopefully the OP has learnt something new today! =D If he/she didn't know about the old American myth of Washington and the tree (which didn't really happen), he/she does now!

You forgot about the part where he declared "Father, I cannot tell a lie." George Washington was incapable of telling lies.
Pleased by his faith, god blessed the axe. Legend tells that any tree stump struck by the axe would grow back within a year.

Question answered, starting to float into off-topic territory now, so..