Usually, a first lady looking radiant on the cover of Vogue is a PR coup for any presidential administration and a carefully-cultivated statement for a magazine that primarily covers fashion but also insists on its seriousness and depth.
There have been some huge, unenforced errors in first lady features–profiling Asma al-Assad as a cosmopolitan “rose in the desert” as her dictator husband slaughtered thousands of Syrian civilians may have been the biggest–but generally, respected...