Dominionist Christians of which there are plenty:
- Michelle Bachman
- Rick Perry
- Ted Cruz
- Sarah Palin
- Ann Coulter
These people believe virulent and fierce application of Christian dogma to the laws of the United States will solve all their country's problems. Additionally, I'm confident each of these (if given the chance) would be willing to allow their religious beliefs to shape foreign policy; acting against Muslim nations that persecute Christian minorities, arming Christian militias in Africa, the Middle East etc, remaining steadfastly loyal to Israel on religious grounds, deploying ground forces to battle Islamic State across the region, trying to incite a Christian-oriented revolt against the Chinese government and so on.
These people believe Christianity is a panacea for the problems of the world at large too; hence they'd probably encourage and even use public funds to sponsor the export of Evangelical Christianity to numerous nations in Africa.
Edit: Looks like Shadow Wolf beat me to it.