North American Chess Open at Bally's Casino, Las Vegas, from Dec 26
The event has 7 sections: Open, Under 2200, Under 2100, Under 1900, Under 1700, Under 1500 and Under 1250.
The Open Section will have one schedule, 5-days, held from December 26-30. GM and IM norms possible.
The Under 2300-Under 1250 sections has either 4-day (December 26-29) or 3-day (December 27-29) schedules to play in.
Find more information about the sections, entry fees, prize funds, hotel info, etc. at the official website.