Congress averted an impending federal government shutdown in March by reaching a bipartisan compromise, which kept the government funded through the end of the current fiscal year. Democrats say a great many of those in jeopardy are legitimate beneficiaries of the Medicaid system. A federal “shutdown” isn’t quite what it sounds like. But multiply it several thousand or maybe several million times, and the headache of a shutdown becomes evident. So unless and until Trump agrees that negotiations are permissible, nothing will happen.