washington get americans enroll health insurance president barack obama healthcare law know obamacare top priority administration president-elect donald trump take office jan. 20 white house say thursday would focus ... maximize opportunity currently available millions americans go healthcare.gov open enrollment period sign healthcare white house spokesman josh earnest tell news brief sylvia burwell secretary u.s. department health human service tweet thursday nov. healthcare.gov best day 100,000 sign-ups since begin sell 2017 obamacare plan nov. 1. government goal 13.8 million sign-ups initially trump say plan repeal obamacare formally know affordable care act insurers say 2017 obamacare plan remain place change would affect 2018 plan earnest say people worry could happen healthcare exchange trump administration benefit available today certainly would encourage people sign capitalize good opportunity say obama meet trump thursday first time one-on-one 90-minute meet white house oval office trump also release review goals overhaul healthcare website reiterate would repeal affordable care act trump pledge repeal obamacare may easy vote congress outright repeal cut away finance first health policy experts say white house say obamacare enrollment priority