There is no way to do it, impossible, Syria has no IRS, INS, Social Security, Syrian National Fingerprint database as a matter of fact none of these GD backward middle ages sh1thole countries have any info on anyone.

No way to screen them effectively.   Thousands missing in Europe - no one knows where they went.

The main problem is, the administration does not care if they get it right. First things first, stop immigration, then start deporting all Muslims, including the ones who were Naturalized. They can not be trusted. Congress, the Republican side and the Democrat side, for many years allowing too many immigrants into this country. Most of them, from the wrong countries. After you finish deporting, close the United Nations building. As my friend said to me, " they have allowed millions into this country, who should not be here."

They don't want to screen them, they want to let them loose.

jarasan is right about Muslim countries keeping records. If they have any records, it will be on the Christians, Catholics and Jews.

Just crossed my mind, how many Muslims work in the Immigration Department?

I think people are starting to see it but it may too late, it is a clash of cultures and it is a one way clash, we try to be nice and accept them here, but they don't want any part of our civilization, they just want our bounty and resources.

Back in the day when immigrants came to America, (Germans, Italians, Irish, etc) they were looking for a better future. They worked hard, raised their families, and while keeping their customs, also adapted and assimilated into our way of life. In other words, they worked to fit in.

With many, if not most Muslims, they do not want to fit in. They want to, in fact, are expected to by people in their native land, to take over. Force Americans born and raised here to change to the Muslims way of life and way of thinking.

I fear for the future of my kids, and grandkids.

As CARBOB stated above;

"The main problem is, the administration does not care if they get it right. First things first, stop immigration, then start deporting all Muslims, including the ones who were Naturalized".

Obviously, this deportation would include Obonehead wouldn't it?? Most obvious reason it ain't ever gonna happen!!