Time for the massive carrots and sticks.
Or, you could repeal the ACA taxes and mandate, which is half the battle, give Trump a big tax win afterwards as well as regulatory reform, and then do a full repeal after picking up more seats with the house and senate in 2018 after the economy roars. Honestly, pre aca wasn’t a lot better. Healthcare costs were already 15% of GDP and rising rapidly and the government was already spending 40% of healthcare spend in the US (up to 50% now).