Wynn investigated for money laundering

"We are not aware of any criminal investigation of the company and no agency has notified the company that it is under any investigation," a Wynn spokesman told CNBC. "The fact that information is requested from us by a governmental agency in no way implies the accusation of any wrongdoing by the company."

How hard would it be to pull off money laundering?
Every time a player cashes in a winning ticket at a sports book for more than $1,200, the player needs to fill out a W-2G form.  For the biggest players in the house, the casino already has all of their information on file to save time for the guest to begin with. 

Any time a bet is taken at a table/sports book, wire transfer or a chip exchange at the cage is completed bigger than $3,000 a Currency Transaction Report (CTR) needs to be filled out by the casino employee.  All of these transactions are recorded and reviewed by management.  All the CTRs are kept until requested.  So in order for this to happen, it would involve so many working parts at the casino level, it would be too tough to manage.

More than likely this is taking place somewhere before the money enters the casino and the government is just requesting information from the casinos to verify amounts, dates of transfers, etc.

What will this effect?

Upon this information going public, Wynn Resorts stock dropped 2 percent. That's pathetic, because essentially it is just a bad public relations day and the stock took a walloping.  Depending on how hard the media wants to beat this up, it could be a disaster for the Wynn empire. 
Wynn, who is already taking a bit of a beating in Macau, could lose more face in the public eye, but that is small potatoes compared to losing the whales.

The second most valuable element in a casino, right behind its information, is its whales.  Whales are big players that have at their disposal large sums of money to spend (and typically lose) at a casino. If the whales start to worry about what is going on at Wynn, they might go somewhere else where there aren't as many government agency people poking around. This is a very big problem for a high-end resort like Wynn, especially at a time when the competition on the strip is salivating for new, bigger players.