Environmental statesmanship.
D000397:Air Pollution; D001334:Automobile Driving; D004781:Environmental Exposure; D005579:Fossil Fuels / Q000592:standards; D006077:Government Agencies; D007878:Legislation as Topic; D011057:Politics; D012926:Social Control, Formal; D013458:Sulfur Dioxide / Q000633:toxicity; D014481:United States; D001335:Vehicle Emissions / Q000633:toxicity
D005579:Fossil Fuels; D001335:Vehicle Emissions; D013458:Sulfur Dioxide