This got me thinking, besides being worried about who's gonna be looking for the money, is it actually "illegal" to keep found money? If I found a $20 bill on the ground and kept it, is that illegal? Also, how would you go about reporting this to the IRS on taxes? That would be a conversation I would love to hear.
edit: @OGputtnfool you posted that as I was typing. Interesting article.
Not that I'm going to take the time and search this, but there are laws on the books in the US (can't tell yo state specific) which criminalize the theft of lost, mislaid or misdelivered property. You are required to take reasonable steps to determine the rightful owner.
The only exception would be if the property is abandoned. But no one would ever abandon 1million dollars.