This page explains what greenhouse gases are and highlights what Virginia is doing to reduce greenhouse gas emissions. A Virginia court ruled Wednesday that Gov.Congress has passed laws regulating two powerful greenhouse gases, as well as a series of other laws stretching back over 50 years. At least 16 states and Puerto Rico have enacted legislation establishing greenhouse gas (GHG) emissions reduction requirements. A judge has ruled that Virginia Governor Glenn Youngkin, a Republican, can't withdraw from a multistate greenhouse gas deal without the Legislature's approval. Enacted in 2021, this policy in 45.21706.1 of the Code of. Lightduty vehicles, such as cars, trucks, and S U Vs, make up the bulk of Virginia's transportation emissions.