Some evidence that Obamacare is reducing the rate of increase in the cost of health insurance:
Big health insurance rate hikes are plummeting, by Sarah Kliff: The number of double-digit rate increases requested by health insurers has plummeted over the past four years, according to a Friday report from the Obama administration.
Researchers combed through data available from the 15 states that publicly post all requests for rate increases in the individual market. They found that, in 2009, 74 percent of all requests came in above 10 percent. By 2012, that number had fallen to 35 percent. Preliminary data for 2013, which only cover a handful of states, shows 14 percent of rate increases asking for a double-digit bump. Here’s what this looks like in chart form:
Does Obamacare get credit? The administration thinks so...
One other possible explanation: Over this time period, there has also been a big slowdown in the rate of health care cost growth. That began in 2009, so it’s not completely impossible that the health insurance industry, noticing that trend, began pricing individual market products at lower rates.
The administration has considered that idea though and looked at the large group market to test it. If the health cost slowdown really was driving lower premiums, the thinking went, it would show up across all insurance products. It didn’t...
Speaking of Obamacare, from Brad DeLong: Douglas Holtz-Eakin and Avik Roy: "You Know All That Stuff We Have Been Saying for Four Years? Nevermind!", and from Paul Krugman: More Swiss Myths.