Boston sued the Massachusetts Gaming Commission this week, seeking to stop the USD1.6 billion project from going forward unless residents of the city's Charlestown neighborhood are given a vote.
On Wednesday, Wynn said it made the first payment in a minimum USD 56 million mitigation package ordered by the commission after Boston refused to participate in surrounding community discussions with the casino developers.
Wynn says the package calls for at least USD 25 million toward improving traffic in Sullivan Square - a key concern for the city.
Wynn said the USD 1 million check was delivered to the commission after Boston declined it.