Kevin McGill writes: “Now, the Democratic message should be: 1. If we don’t get a vote on healthcare subsidies and the shutdown continues, it’s fully the Republicans’ and Trump’s fault. 2. If we get a vote on the subsidies and the Republicans kill them, Republicans and Trump will be responsible for millions being unable to pay for health insurance. 3. If we get a vote on the subsidies and we peel off a few Republicans to save them, we won.”