As the Trump Shutdown of the federal government drags on, and the polls continue to blame Trump and the Republicans, the pressure will eventually become too great on the GOP. They will have to cave to the Democrats (who now have majority control in the House of Representatives), both on Trump’s desired border wall, and the untenable idea that Trump could shut down the federal government because he hasn’t gotten his way on the wall. So now the question is, how will Trump and the Republicans cave without appearing to capitulate to the Democrats, which would cause great anger among the Republican base? The answer is likely to turn on interpretations of the terms “wall,” “fence” and “border security.”