"During a historic gathering in Saudi Arabia, I called on the leaders of more than 50 Muslim nations to join together to drive out the menace which threatens all of humanity. We must stand united against shared enemies to strip them of their territory and their funding, and their networks, and any form of ideological support that they may have. While we will always welcome new citizens who share our values and love our people, our borders will always be closed to terrorism and extremism of any kind."