(U.S. News & World Report) Sen. Angus King, I-Maine, is teaming up with Sen. Tom Coburn, R-Okla., in a push to strip the National Football League of its tax-exempt status.

King announced Wednesday he’s co-sponsoring Coburn’s Properly Reducing Overexemptions for Sports Act, which would affect the NFL and other wealthy professional sports leagues currently enjoying 501(c)(6) tax-exempt status.

King, a former governor who caucuses with Democrats, is the bill’s first co-sponsor and now he’s helping recruit more ahead of Sunday’s Super Bowl game.

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