Matt Rourke / AP
Cowen analyst Chris Krueger says if Trump pushes the building of the Mexican border wall into the new appropriations bill and Democrats fight him on it, we could have a government shutdown this spring. Krueger says the "ballpark sum" is about $10 billion, though it's unclear whether that includes things like increased border patrol, drones, etc. (Read our Facts Matter on the wall).
The date for a showdown: April 28th, when the current appropriations bill expires.