Because a swipe ID card is relevant to the issue, and necessary to address the problem of who is here, including terrorists. It avoids this well, I didn't really know, BS. When I was traveling in France, every place I stayed always wanted to see my passport, and it was keyed into some data base. The French authorities knew where I was every day.
I wouldn't cite the French. The specter of Vichy isn't something I want to use as precedent.