Not taking in refugees has little to do with thinking we are better than others. It has to do with what is in the US's national interest. We should always reach out to help others, but not when it could lead to destruction of our country by admitting those who want to destroy it. There is no sure way to keep out jihadists who come in with fake Syrian passports, and they can buy perfect ones for $2000 (reported on PBS News). Think of it like this - if the United States is brought down, and it no longer has wealth and the military means to protect itself and other smaller countries like we now protect, there is no one else to help on the scale that we do. No other democracy can do what we do. And we sure as hell want a democracy doing it, not China or Russia and their allies.