A few months ago, it looked as if large swaths of the country might end up without any insurers willing to sell Obamacare insurance in 2018. But in the last few weeks the “bare county” problem, which President Trump had cited as a sign the markets were failing, has nearly solved itself.

Now, every county in the nation has at least one insurer currently willing to sell coverage for next year.

The bare county problem had been an unplanned policy hole in Obamacare, which depends on private companies to provide insurance to people who don’t get coverage through a government program or work. The federal government provides subsidies on a sliding scale to help middle-income Americans pay their premiums, but it does not force insurers to offer coverage if they don’t want to. For a while, it seemed there would be a smattering of mostly rural places in the country where no company saw a reason to participate in 2018.