Updated 3:20 p.m. with Illinois Public Radio story including more detail and comment from Rutherford.
Reporting from Illinois Public Radio's Amanda Vinicky used in this report.
Illinois' treasurer invests the state's money. The Comptroller pays the bills. A measure approved by the Senate today would merge the two constitutional offices.
Supporters say it makes "sense" - literally and metaphorically. According to projections, the consolidation would result in a savings of $12 million.