Kan. Stat. § 19-514
That it shall be unlawful for any county treasurer, or his deputies, to buy, directly or indirectly, or in any wise become a party in the purchase of, or traffic in, any state, county, city or township warrant, bill or account against the state, or county, or any city, or town, or township, for any sum less than the full par value expressed upon the face thereof, except such amounts of said state, county, or city or township warrants as may be necessary to pay his taxes; and at each settlement the county treasurer shall file an affidavit that he has not, directly or indirectly, by himself or his deputies, violated the provisions of this section; and the same shall be filed in the office of the county clerk, and preserved therein; and any treasurer who shall swear falsely in any such affidavit shall be guilty of perjury, and on conviction shall be confined in the county jail one year, and his office declared vacant.
K.S.A. 19-514