Philadelphia -- Several health insurance commissioners are asking carriers to assume the administration will not pay cost-sharing reduction payments (CSRs) when they calculate 2018 premiums, and many commissioners are directing plans to cover that loss primarily by hiking silver-level plans, while others suggest carriers spread premium hikes across the metal tiers. Carriers must nail down their rate filings by next Wednesday (Aug. 16), although issuers in the federal exchange have until Sept. 27 to finish contracts. The Affordable Care Act...