Federal Government - Nitrogen Oxides
- S.3565 Sponsored by Barbara Boxer09/27/2008
- S.3496 Sponsored by Barbara Boxer09/19/2008
- H.R.6186 Sponsored by Edward J. Markey06/06/2008
- S.3036 Sponsored by Barbara Boxer05/24/2008
- H.R.6063 Sponsored by Mark Udall05/17/2008
- S.2754 Sponsored by Kent Conrad03/19/2008
- H.R.5529 Sponsored by Edward J. Markey03/06/2008
- H.R.5402 Sponsored by Peter Welch02/12/2008
- H.R.4226 Sponsored by Wayne T. Gilchrest11/15/2007
- S.2349 Sponsored by Joseph R., Jr. Biden11/14/2007
- H.R.3989 Sponsored by John M. McHugh10/29/2007
- S.2191 Sponsored by Joseph I. Lieberman10/18/2007
- S.2155 Sponsored by Robert C. Byrd10/04/2007
- S.1786 Sponsored by James M. Inhofe07/13/2007
- H.R.2881 Sponsored by James L. Oberstar06/27/2007
- H.R.2798 Sponsored by Brad Sherman06/20/2007
- H.R.2635 Sponsored by Henry A. Waxman06/07/2007
- S.1554 Sponsored by Susan M. Collins06/06/2007
- H.R.2447 Sponsored by Albert Russell Wynn05/23/2007
- H.R.2420 Sponsored by Tom Lantos05/22/2007
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