The big "crack down" is against online gambling and online casinos. Lotteries are still ok I believe. (All of it's crap if you ask me anyway. The politicians are just mad because it's too hard for them to regulate and tax.)
Anyway... from dictionary.com...
gam‧ble - Show Spelled Pronunciation[gam-buh l] Pronunciation Key - Show IPA Pronunciation verb, -bled, -bling, noun
–verb (used without object)
1. to play at any game of chance for money or other stakes.
2. to stake or risk money, or anything of value, on the outcome of something involving chance: to gamble on a toss of the dice.
–verb (used with object)
3. to lose or squander by betting (usually fol. by away): He gambled all his hard-earned money away in one night.
4. to wager or risk (money or something else of value): to gamble one's freedom.
5. to take a chance on; venture; risk: I'm gambling that our new store will be a success.
–noun
6. any matter or thing involving risk or hazardous uncertainty.
7. a venture in a game of chance for stakes, esp. for high stakes.
ca‧si‧no - Show Spelled Pronunciation[kuh-see-noh] Pronunciation Key - Show IPA Pronunciation
–noun, plural -nos for 1.
1. a building or large room used for meetings, entertainment, dancing, etc., esp. such a place equipped with gambling devices, gambling tables, etc.
2. (in Italy) a small country house or lodge.
3. Also, cassino. Cards. a game in which cards that are face up on the table are taken with eligible cards in the hand.
lot‧ter‧y - Show Spelled Pronunciation[lot-uh-ree] Pronunciation Key - Show IPA Pronunciation
–noun, plural -ter‧ies.
1. a gambling game or method of raising money, as for some public charitable purpose, in which a large number of tickets are sold and a drawing is held for certain prizes.
2. any scheme for the distribution of prizes by chance.
3. any happening or process that is or appears to be determined by chance: to look upon life as a lottery.
All MA needs to worry about is proving that EU is not one of the first two or even all three and is either just a "game" or an actual "investment" in the virtual universe. If the last can be proven to be the case then it's just us players here in the states that need to worry about the IRS.