There has been a strain of Evangelical Christianity called Dominionism, that has been extremely active in American politics as something of a fifth column.  It is mirrored in Catholicism by the "Church Militant' movement.  The goal is war with Islam, the big clash of civilizations, the final Apocalyptic moment when Jesus comes and divides the righteous from the libtards. 

Sara Palin was as close as they had come to getting someone in power.  Now they have Pence for religious reasons and Bannon because Bannon prides himself on being an agent of chaos.  Bannon has also recently targeted Militant Catholics as allies. That is not suprising given Catholicism's global footprint which is an order of magnitude beyond the Dominionists.  This is scary stuff precisely because Trump got where he is on nativism and with Pence's and Bannon's supporters.   Oh, and these guys won't punch any red buttons, they will go bio/viral as their excuse to close the borders.