What particular measures would be taken under a national emergency declaration to fight climate change? None are listed in the article. National Emergencies are usually declared to provide immediate funds for natural disaster relief. Rebuilding levees and infrastructure is often part of massive aid packages after an event. So exactly what would be done under the climate change emergency? Is it being proposed that the President, after declaring an emergency, could impose a carbon tax, ban gasoline powered cars and trucks, ground airlines, close coal-fired power plants, and other draconian measures?