The Arabs, of course, open their doors wide to foreigners and practice no discrimination whatsoever, except that they stone people who openly practice a non-Islamist religion or women who don't wear burkhas.
Well, we could use the Saudi's own policy. Issue a visa with a local business sponsor, let in government approved tour groups, but don't allow independent travel. And ban the religion of your choice under all circumstances. The Saudis ban Jews, you can pick for us.