Why does it matter?
Really? Shouldn't the question be whether it's a good idea for the country, productive, fair, useful and the like? Why does it matter if it's constitutional or not? Is the constitution in danger of becoming an outmoded and out of date piece of literature hanging round the neck of the US preventing the enactment of legislation that would be a good idea?
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Why are you guys in the US so hung up on 'Is it constitutional?' when 'Is it a good idea?' seems like a much better question to ask?