Government scientists wanted to tell Americans early on how bad the BP oil spill could get, but the White House denied their request to make the worst-case models public, a report by the staff of the national panel investigating the spill said Wednesday. Although not a final report, it could raise questions over whether the Obama administration tried to minimize the extent of the BP oil spill, the worst man-made environmental disaster in U.S. history. The staff paper said that underestimating the flow rates undermined public confidence in the federal government's response" by creating the impression that the government was either incompetent or untrustworthy. The paper said that the loss of trust "fuels public fears." In a separate report, the commission's staff concluded that despite the Coast Guard's insistence that it was always responding to the worst-case scenario, the failure to have an accurate flow rate slowed the response and lulled Obama administration officials into a false belief that the spill would be controlled easily. The first report said that the "decision to withhold worst-case discharge figures" may have been made at a high level. It said that in late April or early May, the National Oceanic and Atmospheric Administration "wanted to make public some of its long-term, worst-case discharge models for the Deepwater Horizon spill, and requested approval to do so from the White House's Office of Management and Budget. Staff was told that the Office of Management and Budget denied NOAA's request."