I think this is exactly the place to do it as the people who would be involved in its creation are likely here. Where else would be a better place?
http://www.politifact.com/truth-o-meter/article/2015/nov/24/...
"No, he would not rule out a database on all Muslims. But for now, he wants a database for refugees."
And most importantly - it wasn't him that brought up the idea, he was asked this "John F. Kennedy is not a homosexual"-style. The fact that he failed to clarify either way was then reported in ambiguous snippets giving the impression that he had brought this up.
Even an insinuation that someone has a connection with an undesirable group apparently makes it legitimate to repeatedly ask them about it. I think such a low-bar to interrogation is not enough; sometime even being repeatedly asked something can give the impression that it might be true (or more likely), "big lie"-style.