Millions of Americans appear to be dropping Obamacare coverage in the months since Congress failed to extend the generous subsidies that had become a defining feature of the Affordable Care Act. Initial sign-ups had already fallen by about 1.2 million people. But insurance companies, state officials and industry analysts are reporting that many more have lost Obamacare coverage now that people are facing long-term higher costs. The federal government has yet to report current enrollment data. Many insurers and analysts are estimating overall declines of about 20%, dropping to around 19 million from the 24 million who were covered under the ACA last year. Other indications suggest there could be even larger potential losses by the end of the year, a deep retrenchment for Obamacare coverage and a reversal of significant gains in the last several years. Related In WA, thousands are forgoing health insurance this year. Here’s why (Jan.…