Fourteen members of the Congressional Black Caucus penned a letter to Artur Davis, the Democrat-turned-Republican former congressman from Alabama who will be speaking at the Republican National Convention. It was not a friendly note. Roll Call: 

The letter, signed by 14 CBC members, accuses Davis of distorting Obama’s record and flip-flopping on “core principles you once held dear.”

“We can only conclude that, rather than a true conversion, your actions are the result of a nakedly personal and political calculation or simmering anguish after failing to secure the Democratic nomination for governor of the State of Alabama in 2010,” the members wrote.