Congressman William Lacy Clay, Jr. (D-Mo.) will hold a House joint oversight hearing on hand-held devices meant to collect data for the 2010 US Census that were deemed faulty.

Recently the Secretary of Commerce called for a major change in the design of new hand-held, electronic census gathering technology partly because of failures in the equipment. Because of these flaws, the cost of the 2010 census may increase by $2.2 to $3 billion.

Clay has pushed the department on its failures in the Field Data Collection Automation Program, created for the devices. The hearing will take place Wednesday at 2 p.m. in Washington, D.C.