David B. Rivkin - By contrast, poll taxes were very effective in excluding blacks, as well as

By contrast, poll taxes were very effective in excluding blacks, as well as impacting many poor whites; in legal parlance, they were overly inclusive but nevertheless served their intended discriminatory purpose. This [Muslim ban] is fundamentally not the case here.

- David B. Rivkin

source: "Is President Trump’s executive order constitutional?" by David B. Rivkin Jr., Karen Tumlin and James Downie, davidbrivkin.com. February 6, 2017.