in the meantime, jacki williford says she'll continue to be extremely wary of eating shellfish. >> i think it's scary because you just don't know what you're getting anymore in foods. >> reporter: as for the rest of the family-- well, not everyone has sworn off mussels. >> it doesn't change a thing for me. >> for him. ( laughs ) >> sreenivasan: j.c. might keep eating mussels, but the high levels of toxins have forced the washington state department of health to shutdown shellfish beds in six counties around the puget sound. >> sreenivasan: finally tonight: the spiritual nourishing of the president. that's the focus of the new book by the man "time" magazine dubbed the "pastor in chief." joshua dubois, the former head of the white house office of faith-based and neighborhood partnerships has penned "the president's devotional: the daily readings that inspired president obama". gwen ifill spoke with dubois recently, and has our book conversation. >> joshua dubois you write that god still surprise. how much of a surprise was it that you ended up at the white house? >> i was hugely sprie