Blue lips and blue fingertips are one of many symptoms of lupus. Blacks contract lupus in greater numbers than caucasians; however, women more than men if I recall correctly.
I did not see the interview. The only audience that matters are the Blue Dogs - did BO give them political cover or not.
Maybe he’s not well and why the loss of weight awhile back.
Here are 53 causes of blue lips. Among the various drug ogverdoses are nicotine addiction and different forms of emphysema.