Arlington Heights trustees unanimously approved a pre-development agreement with the Chicago Bears, but the review process could take years before they break ground on the new football stadium.

Soldier Field is the NFL’s oldest stadium and home to the bears since 1971. Though their city contract runs through 2033, many expect the team will move to the suburbs after the purchase of Arlington Park in the northwest suburbs.

While progressive tax proponents champion the measure as a “tax on the rich,” middle-income families in Arlington Heights would see a massive tax hike under the income tax models praised by Illinois Gov. J.B. Pritzker.