Related by context. Frequent words. (Click for all words.) 63 regulate greenhouse gases 57 regulate greenhouse gas 53 regulate carbon dioxide 49 heat trapping gases 48 tailpipe emissions 47 greenhouse gases 46 greenhouse gas emissions 46 mercury emissions 45 CFPA 45 burning fossil fuels 44 mercury pollution 44 reducing greenhouse gas 44 greenhouse gasses 43 filibuster 43 emissions 43 EPA 43 emission reductions 42 carbon dioxide emissions 42 greenhouse emissions 42 greenhouse gas 42 gases blamed 41 greenhouse gas emission 41 Clean Air 41 reduce greenhouse gas 40 global warming 40 reducing carbon emissions 40 filibusters 39 Endangered Species Act 39 emission reduction 39 rulemaking 39 Kyoto accord 39 Environmental Protection Agency 39 legally binding treaty 39 carbon emissions 39 unilateral sanctions 38 GHG emissions 38 global warming gases 38 legislating 38 net neutrality 37 Baucus 37 filibustered 37 Kyoto Protocol 37 judicial nominations 37 legislation 37 nitrogen oxides 37 GOP filibuster 37 Collin Peterson 37 pollutant 36 reduce carbon emissions 36 recess appointment 36 legislatively 36 emission 36 mountaintop mining 36 military tribunals 36 judicial nominees 36 farm subsidies 36 stopgap spending 36 Net neutrality 36 Kyoto pact 36 legalizing gay marriage 36 GHG 36 MTBE 36 mountaintop removal mining 36 Congress 36 Sen. Bob Corker 36 RGGI 35 appropriations bills 35 Dingell 35 carbon dioxide 35 pollution 35 polluting 35 nitrogen oxide 35 carbon dioxide CO2 emissions 35 polluters 35 Congress adjourns 35 renewable fuels 35 Military Commissions Act 35 Kyoto treaty 35 polluting industries 35 reauthorizing 35 climate change 35 repeal 35 Emissions 35 Congressional Budget Office 35 cloture 34 offshore drilling 34 override veto 34 Copenhagen Accord 34 repealing 34 CO2 emissions 34 Alito nomination 34 tailpipe 34 veto override 34 nitrogen oxide emissions 34 Genachowski 34 CAPITOL HILL AP 34 DOMA 34 piecemeal approach 34 acid rain 34 mountaintop removal 34 filibustering