The Menominee Nation has offered to help pay for a new Milwaukee Bucks arena if Gov. Scott Walker reverses course and approves the tribe's plan for a new casino in Kenosha.

Walker refused to give the project the green light last month. The tribe announced Tuesday that it would contribute $220 million to cover the state's share of a new Bucks arena if Walker lets the casino go forward.

Walker has called for the state to issue $220 million in bonds to help pay for the new arena drawing the ire of his fellow Republicans. The Bucks' new owners have promised to contribute $150 million. Former owner Herb Kohl has promised $100 million of his own money.

A Walker spokeswoman reiterated in an email Tuesday that approving the casino would open the state up to significant litigation from the Forest County Potawatomi.

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Department of Administration Sec. Mike Huebsch echoed the sentiment to WPR's Sean Johnson:

DOA Sec. Mike Huebsch says @GovWalker won't revisit Kenosha casino decision. Says latest Menominee offer not viable. — Shawn Johnson (@SJohnsonWPR) February 10, 2015

Assembly Speaker Robin Vos opposes Walker's plan. He called the Menominee's proposal exciting but said everyone must accept Walker may never reverse his decision.