Former Turing Pharmaceuticals CEO Martin Shkreli is interviewed by host Maria Bartiromo during her "Mornings with Maria Bartiromo" program on the Fox Business Network, in New York, Tuesday, Feb. 2, 2016. (AP Photo/Richard Drew)

Lawmakers anxious to hear from Shkreli, but he’s taking 5th

Pharmaceutical chief Martin Shkreli refused to testify Thursday in an appearance before U.S. lawmakers who excoriated him over severe hikes …