A report [1] released in November 2008 by the NRDC Health Program documents many examples of Bush Administration budget cuts to key data collection programs that monitor hazardous pollutants in our air, water, food, and even our bodies.
The loss of these monitoring programs will result in less data, and therefore greater scientific uncertainty. Read the report here [1].
Links:
[1] http://www.nrdc.org/health/deepestcuts/default.asp