Florida Congressman Carlos Curbelo is getting ready to introduce a bill repealing the gas tax in exchange for a carbon tax. It seems rather odd the Miami Republican wants to chart this path, especially after the House GOP overwhelmingly denounced the notion of a carbon tax last week, but Curbelo isn’t backing down from his proposal. He told Miami Herald his proposal is just a “first step†in the discussion. When you ask this question in a vacuum, is any tax detrimental to economic growth? It’s usually going to be yes…But when you put it in context and you...