Wisconsin Statutes Crimes (Ch. 938 to 951) § 946.61. Bribery of witnesses

(a) With intent to induce another to refrain from giving evidence or testifying in any civil or criminal matter before any court, judge, grand jury, magistrate, court commissioner, referee or administrative agency authorized by statute to determine issues of fact, transfers to him or her or on his or her behalf, any property or any pecuniary advantage; or

(b) Accepts any property or any pecuniary advantage, knowing that such property or pecuniary advantage was transferred to him or her or on his or her behalf with intent to induce him or her to refrain from giving evidence or testifying in any civil or criminal matter before any court, judge, grand jury, magistrate, court commissioner, referee, or administrative agency authorized by statute to determine issues of fact.