Does the FOIA supercede the Trade Secrets Act, the Privacy Act, the Procurement Integrity Act, etc?
The FOIA does not supercede any other federal law unless that law (or FOIA) specifically states that it will be superceded by FOIA or unless there is a treaty, which is “the supreme law of the land.” FOIA is intended to be applied in conjunction with other federal laws and regulations, though that interaction may be quite complex and seemingly contradictory. Some laws can, however, specifically exclude information from coverage by the FOIA.