I agree with much of what Stephen said. The only point I would add is while there may be no such thing as a good tax, at least a bad tax could launch a consumption tax, so I'd like to see more balancing toward consumption taxes at the expense of income taxes. You can do it revenue neutral or revenue positive, but I do think consumption tax is a better path to go down. Any regressivity you can correct.
On February 17th, 2016. See this statement in context.