Average rates for popular health plans sold under the Affordable Care Act will fall 1.5 percent next year, according to the Trump administration, the first such drop and a sign that the insurance markets are gaining firmer traction despite tumult in the past two years. The decrease will affect average premiums for the second-cheapest plans in the “silver” tier, a middle-cost option, after years of double-digit increases. (Stephanie Armour and Anna Wilde Mathews, Wall Street Journal)