Lawmakers don't need to address controversial tax breaks for the 2018 Super Bowl because a letter to the NFL pledges state support in the form of tax breaks, Gov. Mark Dayton said Tuesday.

"The major tax concession is forgoing of the sales tax on the sales of tickets. And that was passed for the 1992 Super Bowl, and that was not rescinded," Dayton told reporters. "That's ongoing until someone changes it. So that's about $9 million in tax incentives that are already there on the table if things remain as they are."

The NFL is expected to announce on May 20 its choice to host the Super Bowl. If Minnesota wins its bid, the championship would be played in the new stadium being built in downtown Minneapolis.

New Orleans and Indianapolis are also in the running to host the 2018 Super Bowl.