There are other groups besides Christians which are being persecuted in the the Middle East. Basically, anybody who is not a Muslim. Nevertheless, I personally have no problem with people trying to help Christians get out of there. I confess, it's a personal bias, but I believe also with good justification. They are not exactly a welcome group over there.
Iraq, for example, had over a million and a half Christians in 2003. Today, while the exact number is unknown, ADF International estimates their numbers to have dwindled down to a couple hundred thousand. (About an 80% drop in 13 years) If that doesn't spell systematic genocide, then I don't really know what does.
You may not agree with Christians - or even like them - but regardless, they have a right to exist according to their own beliefs, and if anyone needs a little favoritism over there, it's that demographic group. I fully understand why Trump would have made an exception in their regard. They have a genuine need for it. Especially in fleeing groups like ISIS and such.
It's called putting compassion before the rule of law. This is something I find many people have a problem understanding. They would rather whine about some group (Usually somebody they don't like.) getting some "special privilege before the law." We must always remember that the law is OUR servant to help and guide our society. We should never become slaves to it's rule. And, while law and order must, in general, prevail - pushing the written law to the 'N'th degree helps no one. It simply turns us into a cold and heartless society. The law, in and of itself, has no allowance for compassion, or forgiveness. Those elements must come from within a society.