Enhanced driver licenses, not regular ones. These come with a whole lot of federal strings attached, and exist pretty much entirely for the purpose of traveling across the border without a passport. As far as I know, the feds require citizenship checks for any participating state.
Now, in some states, regular driver licenses have a citizen or non-citizen marker on them, but that's a whole separate thing (and AFAIK the feds don't consider them sufficient proof in any case).
