As Hurricane Harvey’s inland sea drains from Houston, the cleanup tally is rising: $180 billion for Texas alone, equal to the entire GDP of New Zealand. We in Texas and Louisiana – and perhaps Florida – direly need funds to haul debris, fix houses and schools, replace cars, and build better flood protection. With all these needs, a carbon tax can help. A federal tax on carbon would discourage emissions of carbon dioxide and other GHGs that are warming the seas and the air. Done right, a carbon tax would also bankroll cleanup campaigns led by FEMA and local agencies....