Nearly 9 million Americans have signed up for health coverage in 2018, nearly reaching last year’s total, a significantly higher number than had been expected. The Trump administration had taken steps to discourage signups, in fact President Trump said this Wednesday: “We essentially repealed Obamacare.” While Republicans did pass a tax bill Wednesday that undoes one of the central components of Obamacare: the mandate that people have health insurance, or pay a fine. Health-care experts say that does not mean Obamacare is dead.