Republicans should impose two parameters on any block-grant proposal

1. States can be given enormous freedom to deviate from Obamacare, so long as people who come to the individual market after paying premiums for group insurance for many years can buy insurance that is similar to what employers offer for a similar premium. (I have previously described how I think this could be done.)
2. States can offer limited benefit insurance(buying whatever the tax credit will buy and allowing auto-enrollment and potentially insuring an additional 30 million people) provided that they set aside safety net money to take care of the really expensive cases ($1 million premature baby, for example.)

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