In a computer-assisted analysis of campaign contributions, Matt Stiles and Chase Davis of The Houston Chronicle found that elected officials might have accepted contributions in violation of a city ordinance. The ordinance prohibits "donations from contractors with business before the City Council." Their analysis shows that more than $30,000 was contributed by prohibited donors. ,After learning of the violations, some officials immediately returned the donations. In part, the violations are attributed to the archaic system for identifying ineligible contributors which must all be done manually.