Barak Obama has made statements that Anthony Wiener should resign. The entite Weiner scandal falls into the category of stupid behavior. While the behavior of Wiener is stupid it pales by comparison to sitting in a racist stridently antisemitic church for two decades and feigning ignorance.
The media has its favorites and Wiener's antics are trivial in comparison to what we accepted from Bill Clinton. This may be the first sex scandal with zero actual sex.