GOP presidential candidate Donald Trump's vice presidential pick, Indiana Governor Mike Pence, set a conservative model for Medicaid expansion when he proposed a waiver that imposes a lock-out period for beneficiaries who do not comply with premiums, and he is now in a spat with CMS as the agency tries to gauge the approved waiver's effectiveness. While Pence backed expansion in his state, albeit under terms opposed by beneficiary advocates, he joins a presidential campaign that would scrap Medicaid expansion,...